Madsen, P., & Shafritz, J. M. (1992). Essentials of government ethics (ed.). Meridian.
Chicago Style (17th ed.) ZitazioaMadsen, Peter, eta Jay M. Shafritz. Essentials of Government Ethics. ed. New York: Meridian, 1992.
MLA (9th ed.) ZitazioaMadsen, Peter, eta Jay M. Shafritz. Essentials of Government Ethics. ed. Meridian, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.