Dyfyniad APA

Walsh, W. B. (1989). Tests and measurements (4th ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Walsh, W. Bruce. Tests and Measurements. 4th ed. Englewood Cliffs: Prentice Hall, 1989.

Dyfyniad MLA

Walsh, W. Bruce. Tests and Measurements. 4th ed. Prentice Hall, 1989.

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