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
"Register, Norma Ann","Implications of null argument parameters with respect to acquisition of non-""pro-drop"" languages by second language learners",,[s.n.],1987,外国語および第2言語の教育と学習,,,,https://cir.nii.ac.jp/crid/1130282268774632448