When referencing online course material on your MLA Works Cited page, you will typically only need a container for the location where the material is hosted. That covers material like course pages, lectures, and discussion posts.
If you are citing a lecture and it has a specific title, list that in the place of the generic title below. If you are citing a lecture that you listened to or watched online, include a time stamp of the quotation in the text of your essay in the in-text citation.
Course Page
Sands, Crystal. "English 101: English Composition." Excelsior University, 2016, mycourses.excelsior.edu.
Discussion Post
Brunell, David. "Re: Armstrong Article." Reflections on Assignment 1, Excelsior University, 2013, mycourses.excelsior.edu.
Lecture
Galvez, Lourdes. Lecture on cybersecurity. Blackboard, Online U, 9 Dec. 2020, blackboard.online.edu. Video recording.
Slides
“Slides 040416.” Goals of Academic Writing, taught by Sunil Gupta. Canvas. Excelsior U, 4 Apr. 2016, excelsior.instructure.com/courses/28587/files/14661915.