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 "Bouchard, J. F. and Joint Programme of Studies in the Transport Process and University of Papua New Guinea. Department of Geography",The impact of roads in the Gumine region of Papua New Guinea,,"Dept. of Geography, University of Papua New Guinea",1973,Occasional papers,,,,https://cir.nii.ac.jp/crid/1130282269942850048