Kjær, Jonna. “Keith Busby: «Chrétien De Troyes: ’Perceval’ (’Le Conte Du Graal’)». Criticai Guides to Frenai Texts 98. Grant & Cutler Ltd, London, 1993. 98 P”. Revue Romane, bd. 2, januar 1994, https://tidsskrift.dk/revue_romane/article/view/29870.