Roberts, C. (2020). Ullathorne's The Immaculate Conception of the Mother of God (1904): Doctrinal eclecticism, pastoral implications. International Marian Research Institute.
Čikaški stil citiranja (17. izdanje)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 način citiranja (8. izdanje)Roberts, Christopher. Ullathorne's The Immaculate Conception of the Mother of God (1904): Doctrinal Eclecticism, Pastoral Implications. International Marian Research Institute, 2020.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.