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
"Breyer, J. I. E.","Soils in the lower Boteti region, Central District, Republic of Botswana",,"National Institute of Development Research and Documentation, University of Botswana",1983,Working paper,,,,https://cir.nii.ac.jp/crid/1130282272208131968