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
"Santandrea, Stefano and Gray, Richard",Ethno-geography of the Bahr el Ghazal (Sudan) : an attempt at a historical reconstruction,,Editrice missionaria italiana,1981,Museum Combonianum,,,,https://cir.nii.ac.jp/crid/1130000797037013248