Cita APA (7th ed.)

Roberts, A. R. (1991). Contemporary perspectives on crisis intervention and prevention. Prentice Hall.

Cita Chicago (17th ed.)

Roberts, Albert R. Contemporary Perspectives on Crisis Intervention and Prevention. Englewood Cliffs, N.J: Prentice Hall, 1991.

Cita MLA (9th ed.)

Roberts, Albert R. Contemporary Perspectives on Crisis Intervention and Prevention. Prentice Hall, 1991.