To cite the live version of a webinar you attended, follow the MLA format template. List the name of the presenter as the author, the title of the webinar, the organization responsible for the webinar, and the date. For clarity, you may add “webinar” in the supplemental-element slot at the end of the entry:

Gibson, Angela. MLA Style 101. Modern Language Association, 22 Aug. 2017. Webinar.

Note that the title of the webinar is styled without quotation marks or italics, like a course title.

To cite the recording of the webinar, list the date that the recording was posted and the URL:

Gibson, Angela. MLA Style 101. Modern Language Association, 30 Aug. 2017, outreach.mla.org/mla-style.