APA način citiranja (7. izdanje)

Keller, G., & Warrack, B. (1991). Essentials of business statistics: A systematic approach. Wadsworth Pub. Co..

Čikaški stil citiranja (17. izdanje)

Keller, Gerald, i Brian Warrack. Essentials of Business Statistics: A Systematic Approach. Belmont, Calif.: Wadsworth Pub. Co., 1991.

MLA način citiranja (9. izdanje)

Keller, Gerald, i Brian Warrack. Essentials of Business Statistics: A Systematic Approach. Wadsworth Pub. Co., 1991.