Web site: 2014-12-24 . Unique Places in Poitou-Charentes - Off the Beaten Path - VirtualTourist . 2022-04-11 . https://web.archive.org/web/20141224110359/http://www.virtualtourist.com/travel/Europe/France/Poitou_Charentes/Off_the_Beaten_Path-Poitou_Charentes-MISC-BR-1.html . 24 December 2014 . dead.
Book: Erlande-Brandenburg, Alain. The Ste Chapelle (Paris-Buildings). Grove Encyclopedia of Art. Alain Erlande-Brandenburg.