Cita APA (7a ed.)

Harman, G. (1977). The nature of morality: An introduction to ethics. O.U.P..

Cita Chicago Style (17a ed.)

Harman, Gilbert. The Nature of Morality: An Introduction to Ethics. New York: O.U.P., 1977.

Cita MLA (9a ed.)

Harman, Gilbert. The Nature of Morality: An Introduction to Ethics. O.U.P., 1977.