The Routledge companion to ethics.

MLA

Skorupski, John. The Routledge Companion to Ethics. London: Routledge, 2010.

APA

Skorupski, J. (2010). The Routledge companion to ethics. London: Routledge.

Chicago

Skorupski, John ed. The Routledge Companion to Ethics. London: Routledge, 2010.