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 "Ọjị, N.",A formal and semantic study of the Igbo verbal piece,,"Supplied by British Library, Document Supply Center",1978,British thesis,,,,https://cir.nii.ac.jp/crid/1130000796478383872