Stevens, Matthew Frank. „Colonisation and Credit in Medieval Wales“. In Change and Transformation of Premodern Credit Markets: The Importance of Small-Scale Credits, herausgegeben von Stephan Nicolussi-Köhler, 39–63. Heidelberg: heiBOOKS, 2021. Zugegriffen Mai 9, 2024. https://books.ub.uni-heidelberg.de/heibooks/catalog/book/593/chapter/12690.