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 "Hart, Gillian Patricia",Some socio-economic aspects of African entrepreneurship with particular reference to the Transkei and Ciskei,,"Institute of Social and Economic Research, Rhodes University",1972,Occasional papers,,0949980129,,https://cir.nii.ac.jp/crid/1130282273099999488