APA (7th ed.) Zitazioa
Keller, G., Bartel, H., & Warrack, B. (1990). Statistics for management and Economics (2nd. ed.). Wadsworth.
Chicago Style (17th ed.) Zitazioa
Keller, Gerald, Henry Bartel, eta Brian Warrack. Statistics for Management and Economics. 2nd. ed. Belmont: Wadsworth, 1990.
MLA (9th ed.) Zitazioa
Keller, Gerald, et al. Statistics for Management and Economics. 2nd. ed. Wadsworth, 1990.
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