APA-referens (7:e uppl.)

Smith, B. (1949). Police systems in the United States (Rev. and enl.). Harper.

Chicago-referens (17:e uppl.)

Smith, Bruce. Police Systems in the United States. Rev. and enl. New York: Harper, 1949.

MLA-referens (9:e uppl.)

Smith, Bruce. Police Systems in the United States. Rev. and enl. Harper, 1949.