Dyfyniad APA

Gruber, G. R. (1974). American college testing program. Monarch press.

Dyfyniad Arddull Chicago

Gruber, Gary R. American College Testing Program. New York: Monarch press, 1974.

Dyfyniad MLA

Gruber, Gary R. American College Testing Program. Monarch press, 1974.

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