Kesavan, N. R. (1971). Gramavikasanam. State institute of languages.
シカゴスタイル引用形Kesavan, Nair R. Gramavikasanam. Trivandrum: State institute of languages, 1971.
MLA引用形式Kesavan, Nair R. Gramavikasanam. State institute of languages, 1971.
警告: この引用は必ずしも正確ではありません.