westwork, Oxford Reference https://www.oxfordreference.com/display/10.1093/oi/authority.20110803121926734?p=emailAwIIqat8sLAas&d=/10.1093/oi/authority.20110803121926734
Stokstad, Marilyn; Cothren, Michael W. (2011). Art History. New Jersey: Prentice Hall. p. 225. ISBN 978-0205744220. 978-0205744220
Heyman 2015, p. 9. - Heyman, Jacques (2015). "Strainer arches". Construction History. 30 (2). The Construction History Society: 1–14. ISSN 0267-7768. JSTOR 44215905. Retrieved 2024-03-03. http://www.jstor.org/stable/44215905
Georg, Skalecki (January 2024). "Turris occidentalis. Das Phänomen des Westbaus in der karolingischen Architektur. Teil 1: Die Anfänge unter Karl dem Großen. In: INSITU. Zeitschrift für Architekturgeschichte 16, 2024, S. 5-44. Worms 2024". INSITU. Zeitschrift für Architekturgeschichte. https://www.academia.edu/116324468
"Carolingian art | Britannica". www.britannica.com. Retrieved 2022-05-04. https://www.britannica.com/art/Carolingian-art
"Carolingian art | Britannica". www.britannica.com. Retrieved 2022-05-04. https://www.britannica.com/art/Carolingian-art
Centre, UNESCO World Heritage. "Carolingian Westwork and Civitas Corvey". UNESCO World Heritage Centre. Retrieved 2022-05-04. https://whc.unesco.org/en/list/1447/
Centre, UNESCO World Heritage. "Carolingian Westwork and Civitas Corvey". UNESCO World Heritage Centre. Retrieved 2022-05-04. https://whc.unesco.org/en/list/1447/
Centre, UNESCO World Heritage. "Carolingian Westwork and Civitas Corvey". UNESCO World Heritage Centre. Retrieved 2022-05-04. https://whc.unesco.org/en/list/1447/