APA (7th ed.) Citation

Walker, S. (2005). Police In America: An Introduction. The Mc Graw-Hill Companies.

Chicago Style (17th ed.) Citation

Walker, Samuel. Police In America: An Introduction. The Mc Graw-Hill Companies, 2005.

MLA (8th ed.) Citation

Walker, Samuel. Police In America: An Introduction. The Mc Graw-Hill Companies, 2005.

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