APA-referens (7:e uppl.)
Karp, J. (2006). A futile and stupid gesture: How Doug Kenney and National lampoon changed comedy forever. Chicago Review Press.
Chicago-referens (17:e uppl.)
Karp, Josh. A Futile and Stupid Gesture: How Doug Kenney and National Lampoon Changed Comedy Forever. Chicago: Chicago Review Press, 2006.
MLA-referens (9:e uppl.)
Karp, Josh. A Futile and Stupid Gesture: How Doug Kenney and National Lampoon Changed Comedy Forever. Chicago Review Press, 2006.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.