Baker, R. M. (1966). Salesmanship: Communication, persuasion, perception. Allyn and Bacon.
Cita Chicago (17th ed.)Baker, Richard M. Salesmanship: Communication, Persuasion, Perception. Boston: Allyn and Bacon, 1966.
Cita MLA (9th ed.)Baker, Richard M. Salesmanship: Communication, Persuasion, Perception. Allyn and Bacon, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.