Cita APA (7a ed.)

Prichard, H. A., & Urmson, J. O. (1968). Moral obligation, and Duty and interest: Essays and lectures. Oxford University Press.

Cita Chicago Style (17a ed.)

Prichard, H. A., y J. O. Urmson. Moral Obligation, and Duty and Interest: Essays and Lectures. London [etc.]: Oxford University Press, 1968.

Cita MLA (9a ed.)

Prichard, H. A., y J. O. Urmson. Moral Obligation, and Duty and Interest: Essays and Lectures. Oxford University Press, 1968.