Παραπομπή APA

Marks, R. B. (1985). Personal Selling: An Interactive Approach. Allyn and Bacon.

Παραπομπή Chicago Style

Marks, Ronald B. Personal Selling: An Interactive Approach. Boston: Allyn and Bacon, 1985.

Παραπομπή MLA

Marks, Ronald B. Personal Selling: An Interactive Approach. Allyn and Bacon, 1985.