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
"Du Plessis, Johannes Christiaan and University of Stellenbosch. Bureau for Economic Research","Economic fluctuations in South Africa, 1910-1949",,Bureau for Economic Research,1950,Publikasie,,,,https://cir.nii.ac.jp/crid/1130282271610084736