APA-referens (7:e uppl.)

Greif, E. C. (1958). Modern salesmanship: Principles and problems. Prentice-Hall.

Chicago-referens (17:e uppl.)

Greif, Edwin Charles. Modern Salesmanship: Principles and Problems. Englewood Cliffs, N.J: Prentice-Hall, 1958.

MLA-referens (9:e uppl.)

Greif, Edwin Charles. Modern Salesmanship: Principles and Problems. Prentice-Hall, 1958.