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 "Babcock, E. J. (Earle Jay) and Odell, William Wallace and United States. Bureau of Mines and University of North Dakota. College of Engineering",Production and briquetting of carbonized lignite,,Government Printing Office,1923,Bulletin,,,,https://cir.nii.ac.jp/crid/1130000794898441472