Schiff, J. (1964). Salesmanship fundamentals. Business books.
Čikaški stil citiranjaSchiff, J.S. Salesmanship Fundamentals. New York: Business books, 1964.
MLA način citiranjaSchiff, J.S. Salesmanship Fundamentals. Business books, 1964.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.