एपीए उद्धरण

Pilla, G. R. (1972). Vanijyaparamaya Kattitapatukal. State Institute of language.

शिकागो स्टाइल उद्धरण

Pilla, G R. Vanijyaparamaya Kattitapatukal. Trivandrum: State Institute of language, 1972.

एमएलए उद्धरण

Pilla, G R. Vanijyaparamaya Kattitapatukal. State Institute of language, 1972.