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
"Willard, Rex E. (Rex Ethan) and Reynoldson, L. A. (Le Roy August)",An economic study of farming in southwestern North Dakota,,"Agricultural Experiment Station, North Dakota Agricultural College",1924,Bulletin,,,,https://cir.nii.ac.jp/crid/1130000795200564224