APA (7th ed.) Zitazioa

Keller, G., & Warrack, B. (1997). Statistics for management and economics (4a. ed.). International Thomson.

Chicago Style (17th ed.) Zitazioa

Keller, Gerald, eta Brian Warrack. Statistics for Management and Economics. 4a. ed. Belmont: International Thomson, 1997.

MLA (9th ed.) Zitazioa

Keller, Gerald, eta Brian Warrack. Statistics for Management and Economics. 4a. ed. International Thomson, 1997.