Dyfyniad APA

Spence, J. T. (1983). Elementary statistics (4th ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Spence, Janet T. Elementary Statistics. 4th ed. Englewood Cliffs, New Jersey: Prentice Hall, 1983.

Dyfyniad MLA

Spence, Janet T. Elementary Statistics. 4th ed. Prentice Hall, 1983.

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