Cita APA (7a ed.)

Carter, D. L., Stephens, D. W., & Sapp, A. D. (1989). The state of police education: Policy direction for the 21st century. Police Executive Research Forum.

Cita Chicago Style (17a ed.)

Carter, David L., Darrel W. Stephens, y Allen D. Sapp. The State of Police Education: Policy Direction for the 21st Century. Washington, DC: Police Executive Research Forum, 1989.

Cita MLA (8a ed.)

Carter, David L., et al. The State of Police Education: Policy Direction for the 21st Century. Police Executive Research Forum, 1989.