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
"Rhoad, C. E.","The problem method of teaching, operator's manual : twenty clear-cut steps in teaching four variations of the problem method",,"University of Nebraska, College of Agriculture",1951,University of Nebraska publication,,,,https://cir.nii.ac.jp/crid/1130282273205468416