Keller, G. (1988). Statistics for management and economics: A systematic approach. Wadsworth.
Chicago Style (17. basım) AtıfKeller, Gerald. Statistics for Management and Economics: A Systematic Approach. Belmont, Ca: Wadsworth, 1988.
MLA (9th ed.) AtıfKeller, Gerald. Statistics for Management and Economics: A Systematic Approach. Wadsworth, 1988.
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