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
"Erdos, Renée F. and International Educational Reporting Service",Establishing an institution teaching by correspondence,,the Unesco Press,1975,Experiments and innovations in education,,9231013076,,https://cir.nii.ac.jp/crid/1130282270019718784