Παραπομπή APA

Russel, F. A., & Beach, F. H. Test book of salesmanship (6th ed.). McGraw Hill bok company.

Παραπομπή Chicago Style

Russel, Fredrick A., και Frank H. Beach. Test Book of Salesmanship. 6th ed. New York: McGraw Hill bok company.

Παραπομπή MLA

Russel, Fredrick A., και Frank H. Beach. Test Book of Salesmanship. 6th ed. McGraw Hill bok company.