APA (7e ed.) Bronvermelding

Spiro, R. L., Stanton, W. J., & Rich, G. A. (2003). Management of a sales force (11th ed.). McGraw-Hill/Irwin.

Chicago (17e ed.) Bronvermelding

Spiro, Rosann L., William J. Stanton, en Gregory A. Rich. Management of a Sales Force. 11th ed. Boston: McGraw-Hill/Irwin, 2003.

MLA (8e ed.) Bronvermelding

Spiro, Rosann L., et al. Management of a Sales Force. 11th ed. McGraw-Hill/Irwin, 2003.