Citazione Stile APA (7a Edizione)

Engler, B. (1985). Personality Theories: An introduction (2nd ed.). Houghton Mifflin Company.

Citazione stile Chigago Style (17a edizione)

Engler, Barbara. Personality Theories: An Introduction. 2nd ed. Boston: Houghton Mifflin Company, 1985.

Citatione MLA (9a ed.)

Engler, Barbara. Personality Theories: An Introduction. 2nd ed. Houghton Mifflin Company, 1985.