Dyfyniad APA

Gravetter, F. J., & Wallnau, L. B. (1995). Essentials of statistics for the behavioral sciences (2nd.ed.). West.

Dyfyniad Arddull Chicago

Gravetter, Frederick J., and Larry B. Wallnau. Essentials of Statistics for the Behavioral Sciences. 2nd.ed. Minneapolis: West, 1995.

Dyfyniad MLA

Gravetter, Frederick J., and Larry B. Wallnau. Essentials of Statistics for the Behavioral Sciences. 2nd.ed. West, 1995.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.