Paterson et al. 2018, pp. 132–133. Paterson, Linda; Barbieri, Luca; Harvey, Ruth; Radaelli, Anna (2018). Singing the Crusades: French and Occitan Lyric Responses to the Crusading Movements, 1137–1336. appendix by Marjolaine Raguin. Suffolk, UK: Boydell & Brewer. doi:10.2307/j.ctt22zmbj4. ISBN978-1-84384-482-2.