Keller, G., & Warrack, B. (1998). Statistics for management and economics (4th ed.). Pacific Grove, CA: Duxbury.
استشهاد بنمط شيكاغوKeller, Gerald., و Brian Warrack. Statistics for Management and Economics. 4th ed. Pacific Grove, CA: Duxbury, 1998.
MLA استشهادKeller, Gerald., و Brian Warrack. Statistics for Management and Economics. 4th ed. Pacific Grove, CA: Duxbury, 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.