Holt, M. v. B. (2002). Meet Katharine Drexel: Heiress and God's servant of the oppressed. Charis Books/Servant Publications.
Chicago-referens (17:e uppl.)Holt, Mary van Balen. Meet Katharine Drexel: Heiress and God's Servant of the Oppressed. Ann Arbor, Mich.: Charis Books/Servant Publications, 2002.
MLA-referens (8:e uppl.)Holt, Mary van Balen. Meet Katharine Drexel: Heiress and God's Servant of the Oppressed. Charis Books/Servant Publications, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.