Asbridge, Thomas (2015): . London: Simon & Schuster. Benson, Larry D. (1980): «The Tournament in the romances of Chrétien de Troyes and L'Histoire de Guillaume le Maréchal», 1–24 Crouch, David (2007): «Biography as Propaganda in the 'History of William Marshal», . Martin Aurell red. Poitiers: Université de Poitiers-centre d'études supérieures de civilisation médiévale. Crouch, David, red. (2015): . Camden Society, 5th series, vol. 47. Crouch, David (2016): (3. utg.). London: Routledge. doi:10.4324/9781315642468. ISBN 978-1-317-28308-9. OCLC 953857684. Duby, Georges (1985): . New York: Pantheon. Gillingham, John (1988): «War and Chivalry in the History of William the Marshal», , red. P.R. Coss og S.D. Lloyd. Woodbridge, s. 1–13. Meyer, Paul (1891–1901): , med delvis oversettelse av originalkildene til moderne fransk. Edition, History of William Marshal, (3 bind). Paris: Société de l'histoire de France. Bind 1; [https://archive.org/details/lhistoiredeguill02meyeuoft bind 2; og bind 3 Painter, Sidney (1933): . Baltimore: Johns Hopkins Press.