APA-Zitierstil (7. Ausg.)

Crisp, R. (2015). The cosmos of duty: Henry Sidgwick's "Methods of ethics" (First edition.). Clarendon Press.

Chicago-Zitierstil (17. Ausg.)

Crisp, Roger. The Cosmos of Duty: Henry Sidgwick's "Methods of Ethics". First edition. Oxford: Clarendon Press, 2015.

MLA-Zitierstil (9. Ausg.)

Crisp, Roger. The Cosmos of Duty: Henry Sidgwick's "Methods of Ethics". First edition. Clarendon Press, 2015.