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
"Nthoyiwa, David Nthoyiwa",Population distribution and its implications for socio-economic development in Botswana,,"National Institute of Development and Cultural Research, University College of Botswana",1981,Working paper,,,,https://cir.nii.ac.jp/crid/1130000797487621504