Gulick, L. H., & Urwick, L. F. (2003). Papers on the science of administration (2nd ed.). Routledge.
Lua i Stíl Chicago (17ú heag.)Gulick, Luther Halsey, agus Lyndall F. Urwick. Papers on the Science of Administration. 2nd ed. London ; New York: Routledge, 2003.
Lua MLA (9ú heag.)Gulick, Luther Halsey, agus Lyndall F. Urwick. Papers on the Science of Administration. 2nd ed. Routledge, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.