Chesterton, G. K. (1961). Orthodoxy. Fontana Books.
Lua i Stíl Chicago (17ú heag.)Chesterton, Gilbert Keith. Orthodoxy. London [u.a.]: Fontana Books, 1961.
Lua MLA (8ú heag.)Chesterton, Gilbert Keith. Orthodoxy. Fontana Books, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.