APA (7th ed.) Citation

Duffy, K. G. (1989). Personal growth and behavior 89/90 (9th ed.). The Duskin Pub.

Chicago Style (17th ed.) Citation

Duffy, Karen G. Personal Growth and Behavior 89/90. 9th ed. Virginia: The Duskin Pub, 1989.

MLA (8th ed.) Citation

Duffy, Karen G. Personal Growth and Behavior 89/90. 9th ed. The Duskin Pub, 1989.