Skovgaard-Petersen I. Barbara E. Crawford: Scandinavian Scotland. Scotland in the Early Middle Ages, 2. Studies in the Early History of Britain series. Leicester University Press 1987. xiii, 274 s. ill. ht [Internet]. 1. januar 1989 [henvist 18. april 2024];15. Tilgængelig hos: https://tidsskrift.dk/historisktidsskrift/article/view/53205