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
"Avner, Elaine",Summary of TUTOR commands and system variables,3rd ed,"Computer-based Education Research Laboratory, University of Illinois",1976,PLATO user's memo,,,,https://cir.nii.ac.jp/crid/1130285378498598400