Di Gregorio, M. (2003). The precious pearl: The story of Saint Rita of Cascia. St. Pauls/Alba House.
Lua i Stíl Chicago (17ú heag.)Di Gregorio, Michael. The Precious Pearl: The Story of Saint Rita of Cascia. Staten Island, N.Y.: St. Pauls/Alba House, 2003.
Lua MLA (8ú heag.)Di Gregorio, Michael. The Precious Pearl: The Story of Saint Rita of Cascia. St. Pauls/Alba House, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.