APA aipamena

Schiff, J. (1964). Salesmanship fundamentals. Business books.

Chicago Style aipamena

Schiff, J.S. Salesmanship Fundamentals. New York: Business books, 1964.

MLA aipamena

Schiff, J.S. Salesmanship Fundamentals. Business books, 1964.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.