APA (7th ed.) Citation

Brown, S., Collinson, D., & Wilkinson, R. (1997). Biographical dictionary of twentieth-century philosophers. Routledge.

Chicago Style (17th ed.) Citation

Brown, Stuart, Diané Collinson, and Robert Wilkinson. Biographical Dictionary of Twentieth-century Philosophers. London [etc.]: Routledge, 1997.

MLA (9th ed.) Citation

Brown, Stuart, et al. Biographical Dictionary of Twentieth-century Philosophers. Routledge, 1997.