Hudson, C. . L. (1967). Professional Salesmanship. Staples Press.
Chicago Edition CitationHudson, Cyril L. Professional Salesmanship. London: Staples Press, 1967.
Cita MLAHudson, Cyril L. Professional Salesmanship. Staples Press, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.