Dyfyniad APA

HUFFMAN, K., VERNOY, M., & VERNOY, J. (1997). Psychology in action.-- ed.4. John Wiley and Sons.

Dyfyniad Arddull Chicago

HUFFMAN, Karen, Mark VERNOY, and Judith VERNOY. Psychology in Action.-- Ed.4. New York: John Wiley and Sons, 1997.

Dyfyniad MLA

HUFFMAN, Karen, et al. Psychology in Action.-- Ed.4. John Wiley and Sons, 1997.

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