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 "Coulter, John Merle and U.S. Department of Agriculture. Division of Botany","Preliminary revision of the North American species of Echinocactus, Cereus, and Opuntia",,G.P.O.,1896,Contributions from the United States National Herbarium,,,,https://cir.nii.ac.jp/crid/1130282269829510272