Linton, M. (1991) “Ruth Mazo Karras: Slavery and Society in Medieval Scandinavia. (Yale University Press, 1988). 309 s”., Historie/Jyske Samlinger, (2), s. 313. Tilgængelig hos: https://tidsskrift.dk/historiejyskesamling/article/view/40328 (Set: 6 december 2025).