How you cite a time line will depend on where it was published.
Published in a Print Work
If the time line is included as a stand-alone section of a volume, cite the time line as you would cite any other stand-alone section, such as a preface or an essay. Begin your works-cited-list entry with the author’s name, followed by the title of the time line:
Buchmeter, Sarah. “Biographical and Historical Time Line for Alison Bechdel.” Approaches to Teaching Bechdel’s Fun Home, edited by Judith Kegan Gardiner, Modern Language Association of America, 2018, p. 17.
If the time line is included in an essay in an edited collection or a periodical, you could refer to the time line in your prose and create a works-cited-list entry for the essay in which the time line appears:
David Cowart’s “Timeline-Chronology: Avatars and Congeners of V.” notes that the following happens in 1913 in the novel: “V. in Paris. At Mélanie’s death, goes off with Sgherraccio, an Irredentist (ch. 14)” (“Teaching” 90).
Work Cited
Cowart, David. “Teaching Pynchon’s V.” Approaches to Teaching Pynchon’s The Crying of Lot 49 and Other Works, edited by Thomas H. Schaub, Modern Language Association of America, 2008, pp. 88–98.
Alternatively, you could cite the time line as you would cite a work contained in another work:
David Cowart’s “Timeline-Chronology: Avatars and Congeners of V.” notes that the following happens in 1913 in the novel: “V. in Paris. At Mélanie’s death, goes off with Sgherraccio, an Irredentist (ch. 14).”
Work Cited
Cowart, David. “Timeline-Chronology: Avatars and Congeners of V.” “Teaching Pynchon’s V.,” by Cowart, p. 90. Approaches to Teaching Pynchon’s The Crying of Lot 49 and Other Works, edited by Thomas H. Schaub, Modern Language Association of America, 2008, pp. 88–98.
Published Online
If the time line is embedded on a page of a website, refer to the time line in your prose and create a works-cited-list entry for the web page on which it appears:
The time line “The History of the Modern Language Association” notes that at the MLA’s first conference, which took place in 1883, Franklin Carter was elected president of the association (“MLA History”).
Work Cited
“MLA History.” Modern Language Association, 2023, www.mla.org/About-Us/About-the-MLA/MLA-Archives/Time-Lines/MLA-History.