Cita APA (7th ed.)

Keller, G., & Warrack, B. (1999). Statistical for management and economics (Abbreviated 4th ed.). Duxbury Press.

Cita Chicago (17th ed.)

Keller, Gerald, i Brian Warrack. Statistical for Management and Economics. Abbreviated 4th ed. Pacific Grove, CA: Duxbury Press, 1999.

Cita MLA (9th ed.)

Keller, Gerald, i Brian Warrack. Statistical for Management and Economics. Abbreviated 4th ed. Duxbury Press, 1999.