APA (7th ed.) Citation

Smith, G. (1998). Recent developments in the probation service in England and Wales. Penological information bulletin, 21, 3-20.

Chicago Style (17th ed.) Citation

Smith, Graham. "Recent Developments in the Probation Service in England and Wales." Penological Information Bulletin 21 (1998): 3-20.

MLA (8th ed.) Citation

Smith, Graham. "Recent Developments in the Probation Service in England and Wales." Penological Information Bulletin, vol. 21, 1998, pp. 3-20.