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
"Groeneveld, Sigmar and Baum, E. and Jätzold, Ralph",The Kilombero valley (Tanzania) : characteristic features of the economic geography of a semihumid East African flood plain and its margins,,Weltforum,1968,Afrika-Studien,,,,https://cir.nii.ac.jp/crid/1130282273216410880