Cita APA (7th ed.)

Harman, G. (1977). The nature of morality: An introduction to ethics. Oxford University Press.

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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