Karp, J. (2006). A futile and stupid gesture: How Doug Kenney and National lampoon changed comedy forever. Chicago Review Press.
Chicago-čujuhus (17. p.)Karp, Josh. A Futile and Stupid Gesture: How Doug Kenney and National Lampoon Changed Comedy Forever. Chicago: Chicago Review Press, 2006.
MLA-čujuhus (9. p.)Karp, Josh. A Futile and Stupid Gesture: How Doug Kenney and National Lampoon Changed Comedy Forever. Chicago Review Press, 2006.
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