Cita APA (7a ed.)

Koehn, D. (1994). The Ground of professional ethics. Routledge.

Cita Chicago Style (17a ed.)

Koehn, Daryl. The Ground of Professional Ethics. London [etc.]: Routledge, 1994.

Cita MLA (9a ed.)

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