Dyfyniad APA

Birch, D., & Veroff, J. 1. . . .. (1966). Motivation: A study of action. Brooks/Cole Pub.

Dyfyniad Arddull Chicago

Birch, David, and Joseph 1929- Veroff. Motivation: A Study of Action. Belmont, Calif: Brooks/Cole Pub, 1966.

Dyfyniad MLA

Birch, David, and Joseph 1929- Veroff. Motivation: A Study of Action. Brooks/Cole Pub, 1966.

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