Cita APA (7a ed.)

Whitfield, R. G., & Osler, A. (2001). Introduction to the probation service (2. ed., rev. reprint 2001.). Waterside Pr.

Cita Chicago Style (17a ed.)

Whitfield, Richard G., y Anthony Osler. Introduction to the Probation Service. 2. ed., rev. reprint 2001. Winchester: Waterside Pr, 2001.

Cita MLA (9a ed.)

Whitfield, Richard G., y Anthony Osler. Introduction to the Probation Service. 2. ed., rev. reprint 2001. Waterside Pr, 2001.