Armstrong, P. (1995). A more perfect legacy: A portrait of Brother Ephrem O'Dwyer, C.S.C., 1888-1978. University of Notre Dame Press.
Lua i Stíl Chicago (17ú heag.)Armstrong, Philip. A More Perfect Legacy: A Portrait of Brother Ephrem O'Dwyer, C.S.C., 1888-1978. Notre Dame, Ind.: University of Notre Dame Press, 1995.
Lua MLA (8ú heag.)Armstrong, Philip. A More Perfect Legacy: A Portrait of Brother Ephrem O'Dwyer, C.S.C., 1888-1978. University of Notre Dame Press, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.