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) Hattori Kaoru and Kawabe Ichiro and Mizuno Ayako W. and Ohtaishi Noriyuki,"History and status of sea otters, Enhydra lutris along the coast of Hokkaido, Japan",Mammal Study,13434152,日本哺乳類学会,2005,30,1,41-51,https://cir.nii.ac.jp/crid/1390282679650140416,https://doi.org/10.3106/1348-6160(2005)30[41:hasoso]2.0.co;2