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 National Research Council (U.S.). Highway Research Board,Traffic flow theory : 6 reports,,"Highway Research Board, Division of Engineering",1970,Highway research record,,0309018382,,https://cir.nii.ac.jp/crid/1130282273095134080