Cita APA (7a ed.)

Krebs, D. R., Henry, K. C., & Gabriele, M. B. (1990). When violence erupts: A survival guide for emergency responders. Mosby.

Cita Chicago Style (17a ed.)

Krebs, Dennis R., Kenneth C. Henry, y Mark B. Gabriele. When Violence Erupts: A Survival Guide for Emergency Responders. St. Louis [etc.]: Mosby, 1990.

Cita MLA (9a ed.)

Krebs, Dennis R., et al. When Violence Erupts: A Survival Guide for Emergency Responders. Mosby, 1990.