APA (7th ed.) Citation

Walker, S., & Katz, C. M. (2005). The police in America: An introduction. McGraw Hill.

Chicago Style (17th ed.) Citation

Walker, Samuel, and Charles M. Katz. The Police in America: An Introduction. McGraw Hill, 2005.

MLA (8th ed.) Citation

Walker, Samuel, and Charles M. Katz. The Police in America: An Introduction. McGraw Hill, 2005.

Warning: These citations may not always be 100% accurate.