APA (7th ed.) Citation

Walker, S. (1983). The police in America: An introd. McGraw-Hill.

Chicago Style (17th ed.) Citation

Walker, Samuel. The Police in America: An Introd. New York [u.a.]: McGraw-Hill, 1983.

MLA (8th ed.) Citation

Walker, Samuel. The Police in America: An Introd. McGraw-Hill, 1983.