APA-referens (7:e uppl.)

Earle, H. H. (1967). Police-community relations: Crisis in our time. Thomas.

Chicago-referens (17:e uppl.)

Earle, Howard H. Police-community Relations: Crisis in Our Time. Springfield, Ill: Thomas, 1967.

MLA-referens (9:e uppl.)

Earle, Howard H. Police-community Relations: Crisis in Our Time. Thomas, 1967.