Cita APA (7a ed.)

Dewey, R. E., & Hurlbutt, R. H. (1977). An introduction to ethics. Macmillan.

Cita Chicago Style (17a ed.)

Dewey, Robert E., y Robert H. Hurlbutt. An Introduction to Ethics. New York: Macmillan, 1977.

Cita MLA (9a ed.)

Dewey, Robert E., y Robert H. Hurlbutt. An Introduction to Ethics. Macmillan, 1977.