Speaker's Last Name, First Name. “Title” or description. Sponsoring event or course name, Performance date, Location. Type of performance (Address, Lecture, Keynote speech, Reading).
Westfall, Jeff. "Lecture on homelessness." English 100, 7 Mar. 2007, Skyline College. Lecture.
If the information is retrieved from a website, include website's information:
Speaker’s Last name, First name. “Title of the Article or Individual Page.” Title of the Website, Name of the publisher, Date the resource was published, URL (without http:// or https://). Assessed date.