APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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