Columbia subject headings:
Conciliar theory--History of doctrines--Middle Ages, 600-1500.
Council of Basel (1431-1449 : Basel, Switzerland)
Popes--Primacy--History of doctrines--Middle Ages, 600-1500.
Harvard subject headings:
Authority--Religious aspects.
Popes--Infallibility
Princeton subject headings:
Authority--Religious aspects.
Council of Basel (1431-1449).
Popes--Infallibility.