Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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