Cita APA (7a ed.)

Koehn, D. (1994). The ground of professional ethics. Routlege.

Cita Chicago Style (17a ed.)

Koehn, Daryl. The Ground of Professional Ethics. London: Routlege, 1994.

Cita MLA (9a ed.)

Koehn, Daryl. The Ground of Professional Ethics. Routlege, 1994.