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
"Ewell, Peter T.",Linkages between on-farm research and extension in nine countries,,International Service for National Agricultural Research,1989,"OFCOR, comparative study paper",,,,https://cir.nii.ac.jp/crid/1130282269220318208