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 "Yoshimura, H. and Perera, M. P. and Gunawardena, P. J.",Some aspects of paddy and rice marketing in Sri Lanka : based on a study in four selected districts,,Agrarian Research and Training Institute,1975,Occasional publication series,,,,https://cir.nii.ac.jp/crid/1130282271114034688