Cita APA (7th ed.)

Hoff, L. A. (1989). People in crisis: Understanding and helping (3rd ed.). Addison-Wesley Publishing.

Cita Chicago (17th ed.)

Hoff, Lee Ann. People in Crisis: Understanding and Helping. 3rd ed. Redwood City, Calif: Addison-Wesley Publishing, 1989.

Cita MLA (9th ed.)

Hoff, Lee Ann. People in Crisis: Understanding and Helping. 3rd ed. Addison-Wesley Publishing, 1989.