To cite files available on the WWW, give the author's name, last name first (if known); the full title of the work, in quotation marks; the title of the complete work (if applicable), in italics; any version or file numbers; and the date of the document or last revision (if available). Next, list the protocol (e.g., "http") and the full URL, followed by the date of access in parentheses.

Burka, Lauren P. "A Hypertext History of Multi-User Dimensions." MUD History. 1993. http://www.utopia.com/talent/lpb/muddex/essay (2 Aug. 2006).

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