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
"Spencer, Dunstan S. C. and May-Parker, Ibi I. and Rose, Frank S.","Employment, efficiency, and income in the rice processing industry of Sierra Leone",,African Rural Economy Program,1976,African rural economy paper,,,,https://cir.nii.ac.jp/crid/1130000794943556096