Johnston, M. W. Relationship selling: Mark W. Johnston, Greg W. Marshall. Boston: McGraw-Hill/Irwin.
Chicago Stili AlıntıJohnston, Mark W. Relationship Selling: Mark W. Johnston, Greg W. Marshall. Boston: McGraw-Hill/Irwin.
MLA AlıntıJohnston, Mark W. Relationship Selling: Mark W. Johnston, Greg W. Marshall. Boston: McGraw-Hill/Irwin.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..