Ryan, W. D. (1960). Ecumenical councils. Olander Press, Serra Club of DuPage County.
Lua i Stíl Chicago (17ú heag.)Ryan, William Dennis. Ecumenical Councils. Glen Ellyn, Ill.: Olander Press, Serra Club of DuPage County, 1960.
Lua MLA (8ú heag.)Ryan, William Dennis. Ecumenical Councils. Olander Press, Serra Club of DuPage County, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.