Citazione Stile APA (7a Edizione)

Keller, G., & Warrack, B. (1994). Essentials of business statistics (2nd ed.). Duxbury Press.

Citazione stile Chigago Style (17a edizione)

Keller, Gerald, e Brian Warrack. Essentials of Business Statistics. 2nd ed. Belmont, California: Duxbury Press, 1994.

Citatione MLA (9a ed.)

Keller, Gerald, e Brian Warrack. Essentials of Business Statistics. 2nd ed. Duxbury Press, 1994.