APA (7th ed.) Zitazioa
Sollish, F., & Semanik, J. (2005). The purchasing and supply manager's guide to the C.P.M. exam. Harbor Light Press.
Chicago Style (17th ed.) Zitazioa
Sollish, Fred, eta John Semanik. The Purchasing and Supply Manager's Guide to the C.P.M. Exam. San Francisco: Harbor Light Press, 2005.
MLA (9th ed.) Zitazioa
Sollish, Fred, eta John Semanik. The Purchasing and Supply Manager's Guide to the C.P.M. Exam. Harbor Light Press, 2005.
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