Website
Lastname, Firstname. “Title of Web Page.” Publishing Organization or Name of Website in Italics. Publication date and/or access date if available. URL.
Online Article
Last, First M. “Article Title.” Website Title. Month Date, Year Published. Accessed Month Date, Year. URL.
Online Database
Last, First M. “Article Title.” Journal Title, Series, Volume, no. Issue (Month Date, Year Published): Page(s). Accessed Month Date, Year. URL.
Podcast
Lastname, Firstname. Podcast Episode Title. Podcast audio. Title of Podcast. File Type, 27:8. Date Accessed. URL
Online Multimedia
Lastname, Firstname of Performer, Writer or Creator. Title of Text. Indication of Medium, Running Time. Publication Date. URL.
For more examples visit OWL Purdue Online Writing Lab.
In CMS citations a DOI may be required. If there is no DOI, a URL may be used instead, but only if it is a stable URL.