APA (7th ed.) Citation

Craig, E., & Routledge (Firm). (1998). Routledge encyclopedia of philosophy. Routledge.

Chicago Style (17th ed.) Citation

Craig, Edward, and Routledge (Firm). Routledge Encyclopedia of Philosophy. London ; New York: Routledge, 1998.

MLA (8th ed.) Citation

Craig, Edward, and Routledge (Firm). Routledge Encyclopedia of Philosophy. Routledge, 1998.