APA (7th ed.) Citation

Keller, G., Warrack, B., & Bartel, H. (1990). Statistics for management and economics: A systematic approach (2nd ed.). Wadsworth.

Chicago Style (17th ed.) Citation

Keller, Gerald, Brian Warrack, and Henry Bartel. Statistics for Management and Economics: A Systematic Approach. 2nd ed. Belmont, Calif.: Wadsworth, 1990.

MLA (9th ed.) Citation

Keller, Gerald, et al. Statistics for Management and Economics: A Systematic Approach. 2nd ed. Wadsworth, 1990.