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
"Grytzell, Karl Gustav",The demarcation of comparable city areas by means of population density,,"Royal University of Lund, Dept. of Geography : C.W.K. Gleerup",1963,Lund studies in geography,,,,https://cir.nii.ac.jp/crid/1130000795260554240