Dyfyniad APA
Keller, G., Bartel, H., & Warrack, B. (1990). Statistics for management and Economics (2nd. ed.). Wadsworth.
Dyfyniad Arddull Chicago
Keller, Gerald, Henry Bartel, and Brian Warrack. Statistics for Management and Economics. 2nd. ed. Belmont: Wadsworth, 1990.
Dyfyniad MLA
Keller, Gerald, et al. Statistics for Management and Economics. 2nd. ed. Wadsworth, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.