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
"Ellman, Antony O. and Ratnaweera, D. de. S.","New settlement schemes in Sri Lanka : a study of twenty selected youth schemes, cooperative farms, DDC agricultural projects, and land reform settlements",,Agrarian Research and Training Institute,1974,Research study series,,,,https://cir.nii.ac.jp/crid/1130282269041353984