Seward, D. (1986). Italy's Knights of St. George: The Constantinian Order. Van Duren Publishers.
Chicago-Zitierstil (17. Ausg.)Seward, Desmond. Italy's Knights of St. George: The Constantinian Order. Gerrards Cross [Buckinghamshire]: Van Duren Publishers, 1986.
MLA-Zitierstil (8. Ausg.)Seward, Desmond. Italy's Knights of St. George: The Constantinian Order. Van Duren Publishers, 1986.
警告：这些引文格式不一定是100％准确.