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
"Jón Viðar Sigurðsson and Småberg, Thomas","Friendship and social networks in Scandinavia, c.1000-1800",,Brepols,2013,Early European research,,9782503542485,,https://cir.nii.ac.jp/crid/1130282272856547584