Gaya APA

Stanton, W, J., Buskirk, R, H. (1987). Management of the sales force (7th ed). Homewood, IL: Irwin.

Gaya MLA

Stanton, William, J.., Buskirk, Richard, H.. "Management of the sales force". 7th ed Homewood, IL: Irwin, 1987. Text.