Format: 

Lastname, Firstname. "Title of Presentation." Course Title, Day Month Year, University, City. Title of Website, URL. Accessed Day Month Year.

Lastname, Firstname. "Title of Presentation." Course Title, Day Month Year, University, City. Lecture.

Examples: 

Horowicz, Kari, and Lara Nicosia. "ARTstor: More than Just Art!" MUSE 101-01 Introduction to Museum Studies, 8 Jan. 2011, Rochester Institute of Technology, Rochester. Lecture.

Intext: (Horowicz and Nicosia)

Horowicz, Kari, and Lara Nicosia. "ARTstor: More than Just Art!" 8 Jan. 2011. MUSE 101-01 Introduction to Museum Studies, 8 Jan. 2011, Rochester Institute of Technology, Rochester. myCourses, mycourses.rit.edu/d2l/home/479317. Accessed 12 Dec. 2017.

Intext: (Horowicz and Nicosia)

Notes: 

Class lecture notes are not usually retrievable by others outside of the class and should be used sparingly. For class lecture notes posted online (e.g. myCourses), see the second example. If the lecture was heard in-person, add Lecture to the end of the citation (MLA 52). For lecture notes accessed online, provide the website title and URL, but omit the http:// or https:// (see second example) (MLA 110).

Source:
MLA - p. 52