Baldwin, John (1991). The Government of Philip Augustus. University of California Press.
Barber, Malcolm (1992). The Two Cities: Medieval Europe 1050–1320. Routledge.
Bradbury, Jim (2015). Philip Augustus: King of France 1180-1223. Taylor & Francis.
Curveiller, Stéphane (2021). Philippe Auguste (in French). Ellipses Editions.
Neubecker, Ottfried (1976). Le Grand livre de l'héraldique [Heraldry: sources, symbols, and meaning]. Translated by Harmignies, Roger. New York: McGraw-Hill. ISBN9780070463080.
Wood, Charles T. (1966). The French Apanages and the Capetian Monarchy: 1224-1328. Harvard University Press.