Cita APA (7th ed.)

Keller, G., & Warrack, B. (2000). Statistics for management and economics (5th ed.). Duxbury Press.

Cita Chicago (17th ed.)

Keller, Gerald, i Brian Warrack. Statistics for Management and Economics. 5th ed. Pacific Grove: Duxbury Press, 2000.

Cita MLA (9th ed.)

Keller, Gerald, i Brian Warrack. Statistics for Management and Economics. 5th ed. Duxbury Press, 2000.