Because online information can change or disappear, it is always a good idea to keep personal copies of important electronic information whenever possible. Downloading or even printing key documents ensures you have a stable backup. You can also use the Bookmark function in your web browser in order to build an easy-to-access reference for all of your project's sources (though this will not help you if the information is changed or deleted).
It is also wise to keep a record of when you first consult with each online source. MLA uses the phrase, “Accessed” to denote which date you accessed the web page when available or necessary. It is not required to do so, but it is encouraged (especially when there is no copyright date listed on a website).
Citing an Entire Web Site
The Purdue OWL Family of Sites. The Writing Lab and OWL at Purdue and Purdue U, 2008, owl.english.purdue.edu/owl. Accessed 23 Apr. 2008.
Felluga, Dino. Guide to Literary and Critical Theory. Purdue U, 28 Nov. 2003, www.cla.purdue.edu/english/theory/. Accessed 10 May 2006.
A Page on a Web Site
Lundman, Susan. “How to Make Vegetarian Chili.” eHow, www.ehow.com/how_10727_make-vegetarian-chili.html. Accessed 6 July 2015.
“Athlete's Foot - Topic Overview.” WebMD, 25 Sept. 2014, www.webmd.com/skin-problems-and-treatments/tc/athletes-foot-topic-overview.
An E-Book
Silva, Paul J. How to Write a Lot: A Practical Guide to Productive Academic Writing. E-book, American Psychological Association, 2007.
If the e-book is formatted for a specific reader device or service, you can indicate this by treating this information the same way you would treat a physical book's edition number. Often, this will mean replacing "e-book" with "[App/Service] ed."
Machiavelli, Niccolo. The Prince, translated by W. K. Marriott, Kindle ed., Library of Alexandria, 2018.
Note: The MLA considers the term "e-book" to refer to publications formatted specifically for reading with an e-book reader device (e.g., a Kindle) or a corresponding web application. These e-books will not have URLs or DOIs. If you are citing book content from an ordinary webpage with a URL, use the "A Page on a Web Site" format above.
An Image (Including a Painting, Sculpture, or Photograph)
Goya, Francisco. The Family of Charles IV. 1800. Museo Nacional del Prado, Madrid. Museo Nacional del Prado, www.museodelprado.es/en/the-collection/art-work/the-family-of-carlos-iv/f47898fc-aa1c-48f6-a779-71759e417e74. Accessed 22 May 2006.
Klee, Paul. Twittering Machine. 1922. Museum of Modern Art, New York. The Artchive, www.artchive.com/artchive/K/klee/twittering_machine.jpg.html. Accessed May 2006.
If the work cited is available on the web only, then provide the name of the artist, the title of the work, and then follow the citation format for a website. If the work is posted via a username, use that username for the author.
Adams, Clifton R. “People Relax Beside a Swimming Pool at a Country Estate Near Phoenix, Arizona, 1928.” Found, National Geographic Creative, 2 June 2016, natgeofound.tumblr.com/.
An Article in a Web Magazine
Bernstein, Mark. “10 Tips on Writing the Living Web.” A List Apart: For People Who Make Websites, 16 Aug. 2002, alistapart.com/article/writeliving. Accessed 4 May 2009.
An Article in an Online Scholarly Journal
Dolby, Nadine. “Research in Youth Culture and Policy: Current Conditions and Future Directions.” Social Work and Society: The International Online-Only Journal, vol. 6, no. 2, 2008, www.socwork.net/sws/article/view/60/362. Accessed 20 May 2009.
E-mail (including E-mail Interviews)
Kunka, Andrew. “Re: Modernist Literature.” Received by John Watts, 15 Nov. 2000.
Neyhart, David. “Re: Online Tutoring.” Received by Joe Barbato, 1 Dec. 2016.
A Listserv, Discussion Group, or Blog Posting
Author or compiler name (if available). “Posting Title.” Name of Site, Version number (if available), Name of institution/organization affiliated with the site (sponsor or publisher), URL. Date of access.
Salmar1515 [Sal Hernandez]. “Re: Best Strategy: Fenced Pastures vs. Max Number of Rooms?” BoardGameGeek, 29 Sept. 2008, boardgamegeek.com/thread/343929/best-strategy-fenced-pastures-vs-max-number-rooms. Accessed 5 Apr. 2009.
A Tweet (or whatever its called now :) )
@tombrokaw. “SC demonstrated why all the debates are the engines of this campaign.” Twitter, 22 Jan. 2012, 3:06 a.m., twitter.com/tombrokaw/status/160996868971704320.
@PurdueWLab. “Spring break is around the corner, and all our locations will be open next week.” Twitter, 5 Mar. 2012, 12:58 p.m., twitter.com/PurdueWLab/status/176728308736737282.
A YouTube Video
McGonigal, Jane. “Gaming and Productivity.” YouTube, uploaded by Big Think, 3 July 2012, www.youtube.com/watch?v=mkdzy9bWW3E.
“8 Hot Dog Gadgets put to the Test.” YouTube, uploaded by Crazy Russian Hacker, 6 June 2016, www.youtube.com/watch?v=WBlpjSEtELs.
A Comment on a Website or Article
Not Omniscient Enough. Comment on “Flight Attendant Tells Passenger to ‘Shut Up’ After Argument Over Pasta.” ABC News, 9 Jun 2016, 4:00 p.m., abcnews.go.com/US/flight-attendant-tells-passenger-shut-argument-pasta/story?id=39704050.