Dyfyniad APA

Engler, B. (1999). Personality theories: An introduction (5th ed.). Houghton-Mifflin.

Dyfyniad Arddull Chicago

Engler, Barbara. Personality Theories: An Introduction. 5th ed. Boston: Houghton-Mifflin, 1999.

Dyfyniad MLA

Engler, Barbara. Personality Theories: An Introduction. 5th ed. Houghton-Mifflin, 1999.

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