If the author is unknown, the in-text citation should use an abbreviated version of the work’s title or, in rare cases when the work is also untitled, use a brief description of the document. The first phrase of the title should be used without the beginning article (a, an, the). If your title is a noun phrase, it should not be abbreviated. Format the title (or abbreviated title) consistent with the formatting within the Works Cited. For example, if the title is italicized or in quotes on the Works Cited page, it should also be italicized or in quotes here.
Example:
Changing Harry’s iconic lightning bolt scar to a pentagram was just one of many goth-inspired alterations made by the fan fiction (My Immortal 6).