著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Kjersgaard, Erik and Horskjær, Erik and Danstrup, John and Koch, Hal",Borgerkrig og Kalmarunion : 1241-1448,,Politikens forlag,1963,Danmarks historie,,,,https://cir.nii.ac.jp/crid/1130000797032398592