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
"Ehlers, Ulf-Daniel and European Centre for the Development of Vocational Training",Quality in e-learning : use and dissemination of quality approaches in European e-learning : a study by the European Quality Observatory,,Office for Official Publications of the European Communities,2005,CEDEFOP panorama,,9289604107,,https://cir.nii.ac.jp/crid/1130000796972764288