Cita APA (7a ed.)

Hudson, W. D. (1970). Modern moral philosophy (2nd ed.). Macmillan.

Cita Chicago Style (17a ed.)

Hudson, W. D. Modern Moral Philosophy. 2nd ed. London [etc.]: Macmillan, 1970.

Cita MLA (9a ed.)

Hudson, W. D. Modern Moral Philosophy. 2nd ed. Macmillan, 1970.