APA aipamena

Williams, S. (1967). Salesmanship. The English University Press.

Chicago Style aipamena

Williams, S.A. Salesmanship. London: The English University Press, 1967.

MLA aipamena

Williams, S.A. Salesmanship. The English University Press, 1967.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.