ebrary, Inc, Walker, R. L., & Ivanhoe, P. J. (2007). Working virtue: Virtue ethics and contemporary moral problems. Clarendon Press ; Oxford University Press.
Čikaški stil citiranja (17. izdanje)ebrary, Inc, Rebecca L. Walker, i P. J. Ivanhoe. Working Virtue: Virtue Ethics and Contemporary Moral Problems. Oxford : New York: Clarendon Press ; Oxford University Press, 2007.
MLA način citiranja (9. izdanje)ebrary, Inc, et al. Working Virtue: Virtue Ethics and Contemporary Moral Problems. Clarendon Press ; Oxford University Press, 2007.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.