Cita APA (7th ed.)

Himmelmann, B., & Louden, R. B. (2015). Why be moral? De Gruyter.

Cita Chicago (17th ed.)

Himmelmann, Beatrix, i Robert B. Louden. Why Be Moral? Berlin, [Germany] ; Boston, [Massachusetts]: De Gruyter, 2015.

Cita MLA (9th ed.)

Himmelmann, Beatrix, i Robert B. Louden. Why Be Moral? De Gruyter, 2015.