(anglès) Hunt, William (1889), "Edward the Black Prince", in Stephen, Leslie (ed.), Dictionary of National Biography, vol. 17, London: Smith, Elder & Co, pp. 90–101
wikisource.org
en.wikisource.org
(anglès) Hunt, William (1889), "Edward the Black Prince", in Stephen, Leslie (ed.), Dictionary of National Biography, vol. 17, London: Smith, Elder & Co, pp. 90–101