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
"Berggren, Lars and Hybel, Nils and Landen, Annette","Cogs, cargoes, and commerce : maritime bulk trade in Northern Europe, 1150-1400",,Pontifical Institute of Mediaeval Studies,2002,Papers in mediaeval studies,,0888448155,,https://cir.nii.ac.jp/crid/1130000796257164928