Sobkowiak, Mikołaj. “Modalverbet Skulle I Dansk Og Dets Engelske æekvivalenter”. Folia Scandinavica Posnaniensia 9 (December 1, 2007): 33–47. Accessed January 7, 2025. https://pressto.amu.edu.pl/index.php/fsp/article/view/11281.