Παραπομπή APA

Russell, F., & Beach, F. H. B. (1988). Selling; Principles and Practices (12th ed.). McGraw-Hill.

Παραπομπή Chicago Style

Russell, Frederic, και Frank H Buskirk Beach. Selling; Principles and Practices. 12th ed. New York: McGraw-Hill, 1988.

Παραπομπή MLA

Russell, Frederic, και Frank H Buskirk Beach. Selling; Principles and Practices. 12th ed. McGraw-Hill, 1988.