Johnston, M. W., & Marshall, G. W. (2006). Sales force management (8th ed.). Tata McGraw Hill.
Chicago Stili AlıntıJohnston, Mark W., ve Greg W. Marshall. Sales Force Management. 8th ed. New Delhi: Tata McGraw Hill, 2006.
MLA AlıntıJohnston, Mark W., ve Greg W. Marshall. Sales Force Management. 8th ed. Tata McGraw Hill, 2006.
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