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 Johnson, David W. and Johnson, Roger T. and Smith, Karl A. and ERIC Clearinghouse on Higher Education and Association for the Study of Higher Education Academic controversy : enriching college instruction through intellectual conflict Graduate School of Education and Human Development, The George Washington University 1996 ASHE-ERIC/higher education report / Jonathan D. File, series editor v. 25, no. 3 1878380753 https://ci.nii.ac.jp/ncid/BA6106280X