APA
Johnston M. W. &. M. G. W., . (2005). Relationship selling and sales management. McGraw-Hill Irwin, Boston: .
Chicago
Johnston Mark W & Marshall Greg W, . 2005. Relationship selling and sales management. McGraw-Hill Irwin, Boston: .
Harvard
Johnston M. W. &. M. G. W., . (2005). Relationship selling and sales management. McGraw-Hill Irwin, Boston: .
MLA
Johnston Mark W & Marshall Greg W, . Relationship selling and sales management. McGraw-Hill Irwin, Boston: . 2005.