Russell, F. A. (1974). Textbook of Salesmanship (9th ed.). McGraw-Hill.
Chicago Edition CitationRussell, Fredric Arthur. Textbook of Salesmanship. 9th ed. New York: McGraw-Hill, 1974.
Cita MLARussell, Fredric Arthur. Textbook of Salesmanship. 9th ed. McGraw-Hill, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.