Ladewig Petersen, E. (1973) “Eric Kerridge: Agrarian Problems in the Sixteenth Century and After. Historical Problems: Studies and Documents, ed. by G. R. Elton, vol. 6. London, Allen & Unwin, 1969. xii, 216 s. 35 sh. Paper 22 sh”., Historisk Tidsskrift, 12. Tilgængelig hos: https://tidsskrift.dk/historisktidsskrift/article/view/51386 (Set: 5 december 2025).