Cita APA (7a ed.)

Allen, R. J. (1978). Effective supervision in the police service (1st. ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Allen, Richard J. Effective Supervision in the Police Service. 1st. ed. London [u.a.]: McGraw-Hill, 1978.

Cita MLA (8a ed.)

Allen, Richard J. Effective Supervision in the Police Service. 1st. ed. McGraw-Hill, 1978.