Anderson, D. R., Sweeney, D. J., & Williams, T. A. (1986). Statistics: Concepts and applications. West.
Dyfyniad Arddull ChicagoAnderson, David R., Dennis J. Sweeney, and Thomas A. Williams. Statistics: Concepts and Applications. New York: West, 1986.
Dyfyniad MLAAnderson, David R., et al. Statistics: Concepts and Applications. West, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.