Cita APA (7a ed.)

Harman, G. (1977). The nature of morality. An introducction to Ethics. Oxford University Press.

Cita Chicago Style (17a ed.)

Harman, Gilbert. The Nature of Morality. An Introducction to Ethics. New York: Oxford University Press, 1977.

Cita MLA (9a ed.)

Harman, Gilbert. The Nature of Morality. An Introducction to Ethics. Oxford University Press, 1977.