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 "Seminar on ""History of Malayalam Language"" (1981 : Dept. of Malayalam, University of Madras) and Prabhākaravāriyar, Ke. Em.",History of Malayalam language,,University of Madras,1985,University of Madras Malayalam series,,,,https://cir.nii.ac.jp/crid/1130000794466863744