Cita APA (7a ed.)

Frey, R. G., & Wellman, H. (2005). A companion to applied ethics (1st published in pbk.). Blackwell.

Cita Chicago Style (17a ed.)

Frey, R. G., y Heath Wellman. A Companion to Applied Ethics. 1st published in pbk. Malden (Massachusetts) [etc.]: Blackwell, 2005.

Cita MLA (9a ed.)

Frey, R. G., y Heath Wellman. A Companion to Applied Ethics. 1st published in pbk. Blackwell, 2005.