O'Malley, J. W. (1983). The fourth vow in its Ignatian context: A historical study. American Assistancy Seminar.
Lua i Stíl Chicago (17ú heag.)O'Malley, John W. The Fourth Vow in Its Ignatian Context: A Historical Study. St. Louis, Mo.: American Assistancy Seminar, 1983.
Lua MLA (8ú heag.)O'Malley, John W. The Fourth Vow in Its Ignatian Context: A Historical Study. American Assistancy Seminar, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.