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
"Hybel, Nils and Poulsen, Bjørn",The Danish resources c. 1000-1550 : growth and recession,,Brill,2007,"The northern world : North Europe and the Baltic c. 400-1700 A.D. : peoples, economies and cultures",,9789004161924,,https://cir.nii.ac.jp/crid/1130000798309018112