Kesavan, N. R. (1971). Gramavikasanam. State institute of languages.
Chicago Edition CitationKesavan, Nair R. Gramavikasanam. Trivandrum: State institute of languages, 1971.
Cita MLAKesavan, Nair R. Gramavikasanam. State institute of languages, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.