Columbia subject headings:
Cistercians--History.
Cistercians.
O'Sullivan, Jeremiah Francis, 1903-
O'Sullivan, Jeremiah Francis, 1903---Bibliography.
Harvard subject headings:
Cistercians.
Monasticism and religious orders--History--Middle Ages, 600-1500.
O'Sullivan, Jeremiah Francis, 1903-
O'Sullivan, Jeremiah Francis, 1903---Bibliography.
Princeton subject headings:
Cistercians.
Monasticism and religious orders--History--Middle Ages, 600-1500.
O'Sullivan, Jeremiah Francis, 1903-
O'Sullivan, Jeremiah Francis, 1903---Bibliography.