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) Akihiko Watanabe and Kazuo Onitake,The urodele egg-coat as the apparatus adapted for the internal fertilization,Zoological science,02890003,Tokyo : Zoological Society of Japan,2002-12,19,12,1341-1347,https://cir.nii.ac.jp/crid/1521136280735886592,https://doi.org/10.2108/zsj.19.1341