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
"Mushonga, B. L. B. and Mbaakanye, Dubu M. and Kwelagobe, Tefo",Periodicals in Botswana libraries,,University College of Botswana. National Institute for Research in Development and African Studies. Documentation Unit,1978,Working paper,,,,https://cir.nii.ac.jp/crid/1130000796869529728