Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "甲斐, 道太郎 and 乾, 昭三 and 椿, 寿夫",債権,改訂版,有斐閣,2002,有斐閣双書,,4641112312,,https://cir.nii.ac.jp/crid/1130282273277367424