Cita APA (7th ed.)

Haas, K. B. (1962). Professional salesmanship; persuasion and motivation in marketing. Holt, Rinehart and Winston.

Cita Chicago (17th ed.)

Haas, Kenneth Brooks. Professional Salesmanship; Persuasion and Motivation in Marketing. New York: Holt, Rinehart and Winston, 1962.

Cita MLA (9th ed.)

Haas, Kenneth Brooks. Professional Salesmanship; Persuasion and Motivation in Marketing. Holt, Rinehart and Winston, 1962.