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)
ENGELKING R.,General Topology. Revised and completed edition,Sigma Series in Pure Mathematics,,Heldermann Verlag,1989,6,,,https://cir.nii.ac.jp/crid/1574231874534327936,