Cita APA (7a ed.)

Duggan, H. A. (1984). Crisis intervention: Helping individuals at risk. Lexington Books.

Cita Chicago Style (17a ed.)

Duggan, Hayden A. Crisis Intervention: Helping Individuals at Risk. Lexington, MA: Lexington Books, 1984.

Cita MLA (8a ed.)

Duggan, Hayden A. Crisis Intervention: Helping Individuals at Risk. Lexington Books, 1984.