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
"Chajda, Ivan and Eigenthaler, Günther and Länger, Helmut",Congruence classes in universal algebra,,Heldermann,2003,Research and exposition in mathematics,,3885382261,,https://cir.nii.ac.jp/crid/1130000797256668288