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
"Wolfke, Karol",Custom in present international law,2nd rev. ed,Martinus Nijhoff Publishers,1993,Developments in international law,,0792320093,,https://cir.nii.ac.jp/crid/1130000797619576576