Ladewig Petersen, E. (1982) “Michael Roberts: The Swedish Imperial Experience 1560-1718. Cambridge, at the University Press 1979. x + 156 s. £ 8.95”., Historisk Tidsskrift, 14. Tilgængelig hos: https://tidsskrift.dk/historisktidsskrift/article/view/52367 (Set: 5 december 2025).