Cita APA (7a ed.)
Walker, S., & Katz, C. M. (2005). The police in America: An introduction (5th ed.). McGraw-Hill.
Cita Chicago Style (17a ed.)
Walker, Samuel, y Charles M. Katz. The Police in America: An Introduction. 5th ed. New York: McGraw-Hill, 2005.
Cita MLA (9a ed.)
Walker, Samuel, y Charles M. Katz. The Police in America: An Introduction. 5th ed. McGraw-Hill, 2005.
Precaución: Estas citas no son 100% exactas.