APA (7th ed.) Citation

Engle.T.L. (1989). Psychology: Its principles and applications (9th ed.). HBJ.

Chicago Style (17th ed.) Citation

Engle.T.L. Psychology: Its Principles and Applications. 9th ed. Orlando: HBJ, 1989.

MLA (9th ed.) Citation

Engle.T.L. Psychology: Its Principles and Applications. 9th ed. HBJ, 1989.

Warning: These citations may not always be 100% accurate.