Lindkvist, T. (1991) “Nils Hybel: Crisis or Change. The Concept of Crisis in the Light of Agrarian Structural Reorganization in Late Medieval England, Aarhus University Press 1989, 333 s”., Historisk Tidsskrift, 15(1). Tilgængelig hos: https://tidsskrift.dk/historisktidsskrift/article/view/53377 (Set: 20 marts 2026).