Cita APA (7a ed.)

Greenstone, J. L. (2005). The elements of police hostage and crisis negotiations: Critical incidents and how to respond to them. Haworth Press.

Cita Chicago Style (17a ed.)

Greenstone, James L. The Elements of Police Hostage and Crisis Negotiations: Critical Incidents and How to Respond to Them. New York [u.a.]: Haworth Press, 2005.

Cita MLA (8a ed.)

Greenstone, James L. The Elements of Police Hostage and Crisis Negotiations: Critical Incidents and How to Respond to Them. Haworth Press, 2005.