Cita APA (7a ed.)

Whitfield, R. G., & Osler, A. (1998). Introduction to the probation service (2. ed.). Waterside Pr.

Cita Chicago Style (17a ed.)

Whitfield, Richard G., y Anthony Osler. Introduction to the Probation Service. 2. ed. Winchester: Waterside Pr, 1998.

Cita MLA (8a ed.)

Whitfield, Richard G., y Anthony Osler. Introduction to the Probation Service. 2. ed. Waterside Pr, 1998.