Cita APA (7th ed.)

Zimmerman, M. J. (1996). The concept of moral obligation. Univ. Pr.

Cita Chicago (17th ed.)

Zimmerman, Michael J. The Concept of Moral Obligation. Cambridge: Univ. Pr, 1996.

Cita MLA (9th ed.)

Zimmerman, Michael J. The Concept of Moral Obligation. Univ. Pr, 1996.