Dyfyniad APA

Feldman, R. S. 1. (2011). Essentials of understanding psychology (9th ed.). New York: McGraw-Hill.

Dyfyniad Arddull Chicago

Feldman, Robert S. 1947-. Essentials of Understanding Psychology. 9th ed. New York: McGraw-Hill, 2011.

Dyfyniad MLA

Feldman, Robert S. 1947-. Essentials of Understanding Psychology. 9th ed. New York: McGraw-Hill, 2011.

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