Drumm, W. M. (1943). Hospital chaplains: An historical synopsis and commentary. Catholic University of America Press.
Lua i Stíl Chicago (17ú heag.)Drumm, William Martin. Hospital Chaplains: An Historical Synopsis and Commentary. Washington, D.C.: Catholic University of America Press, 1943.
Lua MLA (8ú heag.)Drumm, William Martin. Hospital Chaplains: An Historical Synopsis and Commentary. Catholic University of America Press, 1943.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.