Futrell, C. M., Mitchell, P., & Singer, R. (2001). ABC's of relationship selling (1st Canadian ed.). McGraw-Hill/Ryerson.
Cita Chicago Style (17a ed.)Futrell, Charles M., Peter Mitchell, y Randal Singer. ABC's of Relationship Selling. 1st Canadian ed. Toronto, Ontario: McGraw-Hill/Ryerson, 2001.
Cita MLA (9a ed.)Futrell, Charles M., et al. ABC's of Relationship Selling. 1st Canadian ed. McGraw-Hill/Ryerson, 2001.
Precaución: Estas citas no son 100% exactas.