Παραπομπή APA

Small, R. L. (1952). Salesmanship. The Macmillan co.

Παραπομπή Chicago Style

Small, Richard Lorring. Salesmanship. New York: The Macmillan co, 1952.

Παραπομπή MLA

Small, Richard Lorring. Salesmanship. The Macmillan co, 1952.