Pfiffner, J. M., & Presthus, R. V. (1960). Public administration (4th ed.). Ronald press co.
Lua i Stíl Chicago (17ú heag.)Pfiffner, John McDonald, agus Robert Vance Presthus. Public Administration. 4th ed. New York: Ronald press co, 1960.
Lua MLA (9ú heag.)Pfiffner, John McDonald, agus Robert Vance Presthus. Public Administration. 4th ed. Ronald press co, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.