O'Keeffe, W. P. (1950). Mary: God's mother - our mother. Catholic Truth Society of Ireland.
Lua i Stíl Chicago (17ú heag.)O'Keeffe, William P. Mary: God's Mother - Our Mother. Dublin: Catholic Truth Society of Ireland, 1950.
Lua MLA (8ú heag.)O'Keeffe, William P. Mary: God's Mother - Our Mother. Catholic Truth Society of Ireland, 1950.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.