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
"Nyanteng, V. K. and University of Ghana. Institute of Statistical, Social and Economic Research",Supplementary occupations and incomes of cocoa farmers in the Suhum agicultural district of Ghana,,"Institute of Statistical, Social and Economic Research, University of Ghana",1979,Discussion paper,,,,https://cir.nii.ac.jp/crid/1130000794180224896