Cita APA (7a ed.)

Allen, S. F., Burruss, G. W., & Fridell, L. (2018). Violence against the police, what direction is it heading? American Society of Criminology.

Cita Chicago Style (17a ed.)

Allen, Scott F., George W. Burruss, y Lorie Fridell. Violence Against the Police, What Direction Is It Heading? American Society of Criminology, 2018.

Cita MLA (9a ed.)

Allen, Scott F., et al. Violence Against the Police, What Direction Is It Heading? American Society of Criminology, 2018.