APA (7th ed.) Citation

Walker, S., & Katz, C. M. (2002). The police in America: An introduction (4. ed.). Mc-Graw-Hill.

Chicago Style (17th ed.) Citation

Walker, Samuel, and Charles M. Katz. The Police in America: An Introduction. 4. ed. Boston [u.a.]: Mc-Graw-Hill, 2002.

MLA (8th ed.) Citation

Walker, Samuel, and Charles M. Katz. The Police in America: An Introduction. 4. ed. Mc-Graw-Hill, 2002.