Cita APA (7a ed.)

Barr, H. (1966). A survey of group work in the probation service. Her Majesty's Stationery Office.

Cita Chicago Style (17a ed.)

Barr, Hugh. A Survey of Group Work in the Probation Service. London: Her Majesty's Stationery Office, 1966.

Cita MLA (9a ed.)

Barr, Hugh. A Survey of Group Work in the Probation Service. Her Majesty's Stationery Office, 1966.