Poperch, E. (1982). Product marketing. Cherbson publishing co.
Čikaški stil citiranjaPoperch, Elizabeth. Product Marketing. New York: Cherbson publishing co, 1982.
MLA način citiranjaPoperch, Elizabeth. Product Marketing. Cherbson publishing co, 1982.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.