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 "Leatherwood, Stephen and Reeves, Randall R. and United Nations Environment Programme and Oceans and Coastal Areas Programme Activity Centre","Marine mammal research and conservation : In Sri Lanka, 1985-1986",2nd ed,UNEP,1991,Marine mammal technical report,,9280712365,,https://cir.nii.ac.jp/crid/1130000795658307456