Cita APA (7a ed.)

Lennox, J. G., & Gotthelf, A. (2011). Metaethics, egoism, and virtue: Studies in Ayn Rand's normative theory. University of Pittsburgh Press.

Cita Chicago Style (17a ed.)

Lennox, James G., y Allan Gotthelf. Metaethics, Egoism, and Virtue: Studies in Ayn Rand's Normative Theory. Pittsburgh, Pa.: University of Pittsburgh Press, 2011.

Cita MLA (8a ed.)

Lennox, James G., y Allan Gotthelf. Metaethics, Egoism, and Virtue: Studies in Ayn Rand's Normative Theory. University of Pittsburgh Press, 2011.