Johnston, M. W., & Marshall,Greg W. (2006). Churchill/ Ford/ Walker's Sales force management (8th ed.). Tata McGraw-Hill.
Citación estilo ChicagoJohnston, Mark W., y Marshall,Greg W. Churchill/ Ford/ Walker's Sales Force Management. 8th ed. New Delhi: Tata McGraw-Hill, 2006.
Cita MLAJohnston, Mark W., y Marshall,Greg W. Churchill/ Ford/ Walker's Sales Force Management. 8th ed. Tata McGraw-Hill, 2006.
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