McCormack, M. H. (2000). Never wrestle with a pig: And ninety other ideas to build your business and career. Penguin books.
Chicago-referens (17:e uppl.)McCormack, Mark H. Never Wrestle with a Pig: And Ninety Other Ideas to Build Your Business and Career. New York: Penguin books, 2000.
MLA-referens (9:e uppl.)McCormack, Mark H. Never Wrestle with a Pig: And Ninety Other Ideas to Build Your Business and Career. Penguin books, 2000.
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