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 Great Britain. Hydrographic Department,"West coast of India pilot : Maldives, Lakshadweep, Sri Lanka, with Palk Bay, the west coast of India, the coast of Pakistan","11th ed., rev",Hydrographer of the Navy,1986,N.P.,,,,https://cir.nii.ac.jp/crid/1130000793760273792