Cita APA (7th ed.)
Allen, S. (1987). How to be funny: Discovering the comic you. McGraw-Hill.
Cita Chicago (17th ed.)
Allen, Steve. How to Be Funny: Discovering the Comic You. New York: McGraw-Hill, 1987.
Cita MLA (9th ed.)
Allen, Steve. How to Be Funny: Discovering the Comic You. McGraw-Hill, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.