Cita APA (7a ed.)

Becker, H. K. (1980). Police systems of Europe: A survey of selected police organizations (2. ed.). Thomas.

Cita Chicago Style (17a ed.)

Becker, Harold K. Police Systems of Europe: A Survey of Selected Police Organizations. 2. ed. Springfield, Ill: Thomas, 1980.

Cita MLA (8a ed.)

Becker, Harold K. Police Systems of Europe: A Survey of Selected Police Organizations. 2. ed. Thomas, 1980.