著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI)
OKSANEN J,vegan : Community Ecology Package. R package version 1.8-5,http://www.cran.r-project.org,,,2007,,,,https://cir.nii.ac.jp/crid/1570854175539033984,