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 "Ahwireng-Obeng, Fred and Akussah, George",The impact of HIV-AIDS on African economies,,Africa Institute of South Africa,2003,Research paper,,079830166X,,https://cir.nii.ac.jp/crid/1130282270416921472