Roberts, C. (2020). Ullathorne's The Immaculate Conception of the Mother of God (1904): Doctrinal eclecticism, pastoral implications. International Marian Research Institute.
Chicago-referens (17:e uppl.)Roberts, Christopher. Ullathorne's The Immaculate Conception of the Mother of God (1904): Doctrinal Eclecticism, Pastoral Implications. Dayton, Ohio: International Marian Research Institute, 2020.
MLA-referens (8:e uppl.)Roberts, Christopher. Ullathorne's The Immaculate Conception of the Mother of God (1904): Doctrinal Eclecticism, Pastoral Implications. International Marian Research Institute, 2020.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.