Website content for the Author-Date System

It is often sufficient simply to describe web pages and other website content in the text (“As of May 1, 2017, Yale’s home page listed . . .”). If a more formal citation is needed, it may be styled like the examples below. For a source that does not list a date of publication or revision, use n.d. (for “no date”) in place of the year and include an access date.

Reference list entries (in alphabetical order)

Bouman, Katie. 2016. “How to Take a Picture of a Black Hole.” Filmed November 2016 at TEDxBeaconStreet, Brookline, MA. Video, 12:51. https://www.ted.com/talks/katie_bouman_what_does_a_black_hole_look_like.

Google. 2017. “Privacy Policy.” Privacy & Terms. Last modified April 17, 2017. https://www.google.com/policies/privacy/.

Yale University. n.d. “About Yale: Yale Facts.” Accessed May 1, 2017. https://www.yale.edu/about-yale/yale-facts.

In-text citations

(Bouman 2016)

(Google 2017)

(Yale University n.d.)

For more examples, see 15.50–52 in The Chicago Manual of Style. For multimedia, including live performances, see 15.57.

Website content for Notes and Bibliography

It is often sufficient simply to describe web pages and other website content in the text (“As of May 1, 2017, Yale’s home page listed . . .”). If a more formal citation is needed, it may be styled like the examples below. For a source that does not list a date of publication or revision, include an access date (as in example note 2).

Notes

1. “Privacy Policy,” Privacy & Terms, Google, last modified April 17, 2017, https://www.google.com/policies/privacy/.

2. “About Yale: Yale Facts,” Yale University, accessed May 1, 2017, https://www.yale.edu/about-yale/yale-facts.

3. Katie Bouman, “How to Take a Picture of a Black Hole,” filmed November 2016 at TEDxBeaconStreet, Brookline, MA, video, 12:51, https://www.ted.com/talks/katie_bouman_what_does_a_black_hole_look_like.

Shortened notes

4. Google, “Privacy Policy.”

5. “Yale Facts.”

6. Bouman, “Black Hole.”

Bibliography entries (in alphabetical order)

Bouman, Katie. “How to Take a Picture of a Black Hole.” Filmed November 2016 at TEDxBeaconStreet, Brookline, MA. Video, 12:51. https://www.ted.com/talks/katie_bouman_what_does_a_black_hole_look_like.

Google. “Privacy Policy.” Privacy & Terms. Last modified April 17, 2017. https://www.google.com/policies/privacy/.

Yale University. “About Yale: Yale Facts.” Accessed May 1, 2017. https://www.yale.edu/about-yale/yale-facts.

For more examples, see 14.205–10 in The Chicago Manual of Style. For multimedia, including live performances, see 14.261–68.

Social media content for the Author-Date System

Citations of content shared through social media can usually be limited to the text (as in the first example below). If a more formal citation is needed, a reference list entry may be appropriate. In place of a title, quote up to the first 160 characters of the post. Comments are cited in reference to the original post.

Text

Conan O’Brien’s tweet was characteristically deadpan: “In honor of Earth Day, I’m recycling my tweets” (@ConanOBrien, April 22, 2015).

Reference list entries (in alphabetical order)

Chicago Manual of Style. 2015. “Is the world ready for singular they? We thought so back in 1993.” Facebook, April 17, 2015. https://www.facebook.com/ChicagoManual/posts/10152906193679151.

Souza, Pete (@petesouza). 2016. “President Obama bids farewell to President Xi of China at the conclusion of the Nuclear Security Summit.” Instagram photo, April 1, 2016. https://www.instagram.com/p/BDrmfXTtNCt/.

In-text citations

(Chicago Manual of Style 2015)

(Souza 2016)

(Michele Truty, April 17, 2015, 1:09 p.m., comment on Chicago Manual of Style 2015)

Social media content for Notes and Bibliography

Citations of content shared through social media can usually be limited to the text (as in the first example below). A note may be added if a more formal citation is needed. In rare cases, a bibliography entry may also be appropriate. In place of a title, quote up to the first 160 characters of the post. Comments are cited in reference to the original post.

Text

Conan O’Brien’s tweet was characteristically deadpan: “In honor of Earth Day, I’m recycling my tweets” (@ConanOBrien, April 22, 2015).

Notes

1. Pete Souza (@petesouza), “President Obama bids farewell to President Xi of China at the conclusion of the Nuclear Security Summit,” Instagram photo, April 1, 2016, https://www.instagram.com/p/BDrmfXTtNCt/.

2. Chicago Manual of Style, “Is the world ready for singular they? We thought so back in 1993,” Facebook, April 17, 2015, https://www.facebook.com/ChicagoManual/posts/10152906193679151.

Shortened notes

3. Souza, “President Obama.”

4. Michele Truty, April 17, 2015, 1:09 p.m., comment on Chicago Manual of Style, “singular they.”

Bibliography entry

Chicago Manual of Style. “Is the world ready for singular they? We thought so back in 1993.” Facebook, April 17, 2015. https://www.facebook.com/ChicagoManual/posts/10152906193679151.

Personal communication for the Author-Date System

Personal communications, including email and text messages and direct messages sent through social media, are usually cited in the text only; they are rarely included in a reference list.

In-text citation

(Sam Gomez, Facebook message to author, August 1, 2017)

Personal communication for Notes and Bibliography

Personal communications, including email and text messages and direct messages sent through social media, are usually cited in the text or in a note only; they are rarely included in a bibliography.

Note

1. Sam Gomez, Facebook message to author, August 1, 2017.