Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Verzijl, J. H. W. (Jan Hendrik Willem)",Juridical facts as sources of international rights and obligations,,A.W. Sijthoff,1973,Nova et vetera iuris gentium,,9028602232,,https://cir.nii.ac.jp/crid/1130282272153697408