Guptan Nair, S. (2003). Vagardhavicharam (Study on Lexicography). State Institute of languages.
Chicago Edition CitationGuptan Nair, S. Vagardhavicharam (Study on Lexicography). Trivandrum: State Institute of languages, 2003.
MLA Edition CitationGuptan Nair, S. Vagardhavicharam (Study on Lexicography). State Institute of languages, 2003.
Warning: These citations may not always be 100% accurate.