APA (7e ed.) Bronvermelding

Futrell, C. (1989). ABC's of selling (2nd ed.). Irwin.

Chicago (17e ed.) Bronvermelding

Futrell, Charles. ABC's of Selling. 2nd ed. Homewood, Ill.: Irwin, 1989.

MLA (9e ed.) Bronvermelding

Futrell, Charles. ABC's of Selling. 2nd ed. Irwin, 1989.