Begheyn, P. (1981). A bibliography on St. Ignatius' Spiritual exercises: A working-tool for American students. American Assistancy Seminar.
Chicago-referens (17:e uppl.)Begheyn, Paul. A Bibliography on St. Ignatius' Spiritual Exercises: A Working-tool for American Students. St. Louis: American Assistancy Seminar, 1981.
MLA-referens (8:e uppl.)Begheyn, Paul. A Bibliography on St. Ignatius' Spiritual Exercises: A Working-tool for American Students. American Assistancy Seminar, 1981.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.