Tohutoro APA (7th ed.)

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

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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