Di Gregorio, M. (2003). The precious pearl: The story of Saint Rita of Cascia. St. Pauls/Alba House.
Chicago Style aipamenaDi Gregorio, Michael. The Precious Pearl: The Story of Saint Rita of Cascia. Staten Island, N.Y.: St. Pauls/Alba House, 2003.
MLA aipamenaDi Gregorio, Michael. The Precious Pearl: The Story of Saint Rita of Cascia. St. Pauls/Alba House, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.