Pius IX, P. (1875). Syllabus for the people: A review of the propositions condemned by His Holiness Pope Pius IX, with a text of the condemned list. New York.
Chicago-referens (17:e uppl.)Pius IX, Pope. Syllabus for the People: A Review of the Propositions Condemned by His Holiness Pope Pius IX, with a Text of the Condemned List. New York, 1875.
MLA-referens (8:e uppl.)Pius IX, Pope. Syllabus for the People: A Review of the Propositions Condemned by His Holiness Pope Pius IX, with a Text of the Condemned List. New York, 1875.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.