Gaya APA

Wiger, D, E. et al (1953 -2003). Essentials of Crisis Counseling and Intervention . Upper Saddle River, NJ: John Wiley.

Gaya MLA

Wiger, Donald, E. et al. "Essentials of Crisis Counseling and Intervention". Upper Saddle River, NJ: John Wiley, 1953 -2003. Text.