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 Maritime & Port Authority of Singapore. Hydrographic Department,Singapore Strait. Port of Singapore : anchorages and aids to navigation,1997 new ed.,"Hydrographic Department, Maritime and Port authority of Singapore",1997,Notice to mariners,,,,https://cir.nii.ac.jp/crid/1130000798316973440