Cita APA (7a ed.)

Duffy, D., & Ryan, T. (2004). New approaches to preventing suicide: A manual for practitioners. Jessica Kingsley.

Cita Chicago Style (17a ed.)

Duffy, David, y Tony Ryan. New Approaches to Preventing Suicide: A Manual for Practitioners. London: Jessica Kingsley, 2004.

Cita MLA (9a ed.)

Duffy, David, y Tony Ryan. New Approaches to Preventing Suicide: A Manual for Practitioners. Jessica Kingsley, 2004.