एपीए उद्धरण

Kesavan, N. R. (1971). Gramavikasanam. State institute of languages.

शिकागो स्टाइल उद्धरण

Kesavan, Nair R. Gramavikasanam. Trivandrum: State institute of languages, 1971.

एमएलए उद्धरण

Kesavan, Nair R. Gramavikasanam. State institute of languages, 1971.