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
"Purves, Alan C.",The Idea of difficulty in literature,,State University of New York Press,1991,"SUNY series, literacy, culture, and learning : theory and practice",,"0791406733,0791406741",,https://cir.nii.ac.jp/crid/1130282272809279232