Libros de infallibility

L' oggetto del magistero definitivo della Chiesa alla luce del m.p. Ad tuendam fidem

Truth and certainty

Nullity of the Roman faith

When does the Church speak infallibly? Or, The nature and scope of the Church's teaching office

How the Pope became infallible

Christianity and infallibility

Kirche, gehalten in der Wahrheit?

Roman catholicism

Pius IX. (1846-1878)