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
"Randall, Darrell",Factors of economic development and the Okovango Delta : some world relationships to and problems of planning for economic development of an underdeveloped area in Africa,,University of Chicago,1957,Research paper,,,,https://cir.nii.ac.jp/crid/1130000795026759424