Keller, G., Bartel, H., & Warrack, B. (1988). Statistics for management and economics: A systematic approach. Wadsworth Pub. Co.
Chicago Style (17. basım) AtıfKeller, Gerald, Henry Bartel, ve Brian Warrack. Statistics for Management and Economics: A Systematic Approach. Belmont, Calif: Wadsworth Pub. Co, 1988.
MLA (9th ed.) AtıfKeller, Gerald, et al. Statistics for Management and Economics: A Systematic Approach. Wadsworth Pub. Co, 1988.
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