ZIEGLER, Michelle. The Politics of Exile in Early Northumbria. The Heroic Age: A Journal of Early Medieval Northwestern Europe. St. John's: Memorial University of Newfoundland, 1999, čís. 2 – podzim/zima. Dostupné online. (anglicky)
ZIEGLER, Michelle. The Politics of Exile in Early Northumbria. The Heroic Age: A Journal of Early Medieval Northwestern Europe. St. John's: Memorial University of Newfoundland, 1999, čís. 2 – podzim/zima. Dostupné online. (anglicky)
wikisource.org
en.wikisource.org
HUNT, William. [["Redwald"|Redwald]]. In: LEE, Sidney. [[Dictionary of National Biography|Dictionary of National Biography]]. London: Smith, Elder & Co., 1896. S. 386. (anglicky)