Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

Himmelmann, Beatrix, et al. Why Be Moral? De Gruyter, 2015.