Citazione Stile APA (7a Edizione)

Russell, F. (1988). Selling principles and practices. McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Russell, Frederic. Selling Principles and Practices. New York: McGraw-Hill, 1988.

Citatione MLA (9a ed.)

Russell, Frederic. Selling Principles and Practices. McGraw-Hill, 1988.