Cita APA (7a ed.)

Warren, Q., & Foot, P. (1993). Morality and action ([1st pub.].). University Press.

Cita Chicago Style (17a ed.)

Warren, Quinn, y Philippa Foot. Morality and Action. [1st pub.]. Cambridge: University Press, 1993.

Cita MLA (9a ed.)

Warren, Quinn, y Philippa Foot. Morality and Action. [1st pub.]. University Press, 1993.