Clarke, R. F. (1955). Humility: Thirty short meditations. Catholic Truth Society.
Lua i Stíl Chicago (17ú heag.)Clarke, Richard F. Humility: Thirty Short Meditations. London: Catholic Truth Society, 1955.
Lua MLA (8ú heag.)Clarke, Richard F. Humility: Thirty Short Meditations. Catholic Truth Society, 1955.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.