APA (7th ed.) Citation

Campbell, D., Mason, B., & Barnes, G. G. (2002). Perspectives on supervision. Karnac.

Chicago Style (17th ed.) Citation

Campbell, David, Barry Mason, and Gill Gorell Barnes. Perspectives on Supervision. London: Karnac, 2002.

MLA (9th ed.) Citation

Campbell, David, et al. Perspectives on Supervision. Karnac, 2002.