Citazione Stile APA (7a Edizione)

Marks, R. B. (1991). Personal selling: An interactive approach (4th ed.). Allyn and Bacon.

Citazione stile Chigago Style (17a edizione)

Marks, Ronald B. Personal Selling: An Interactive Approach. 4th ed. Boston: Allyn and Bacon, 1991.

Citatione MLA (9a ed.)

Marks, Ronald B. Personal Selling: An Interactive Approach. 4th ed. Allyn and Bacon, 1991.