Garland, P. B. (1959). The definition of sacrament according to Saint Thomas. University of Ottawa Press.
Lua i Stíl Chicago (17ú heag.)Garland, Peter B. The Definition of Sacrament According to Saint Thomas. Ottawa: University of Ottawa Press, 1959.
Lua MLA (8ú heag.)Garland, Peter B. The Definition of Sacrament According to Saint Thomas. University of Ottawa Press, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.