APA način citiranja (7. izdanje)

Regan, R. E. (1943). Professional secrecy in the light of moral principles: With an application to several important professions. Augustinian Press.

Čikaški stil citiranja (17. izdanje)

Regan, Robert Edward. Professional Secrecy in the Light of Moral Principles: With an Application to Several Important Professions. Washington, D. C.: Augustinian Press, 1943.

MLA način citiranja (8. izdanje)

Regan, Robert Edward. Professional Secrecy in the Light of Moral Principles: With an Application to Several Important Professions. Augustinian Press, 1943.