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
"Pettersson, B.",The genus Nervilia (Orchidaceae) in Africa and the Arabian Peninsula,,Rijksherbarium / Hortus Botanicus,1991,Orchid monographs,,9071236080,,https://cir.nii.ac.jp/crid/1130282272901680128