Vollert, C. O. (1965). A theology of Mary. Herder and Herder.
Lua i Stíl Chicago (17ú heag.)Vollert, Cyril O. A Theology of Mary. [New York]: Herder and Herder, 1965.
Lua MLA (8ú heag.)Vollert, Cyril O. A Theology of Mary. Herder and Herder, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.