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
"Bragg, Linda J. and McFaul, E. Jerry",U.S. Geological Survey Coal Quality(COALQUAL) database: version 2.0,,"U.S. Department of the Interior, U.S. Geological Survey",1998,Open-file report,,,,https://cir.nii.ac.jp/crid/1130000797121560576