APA aipamena

Balagopal T S & Vijayan C.V. (1973). Kettita varappu. State instuitute of laguages.

Chicago Style aipamena

Balagopal T S and Vijayan C.V. Kettita Varappu. Trivandrum: State instuitute of laguages, 1973.

MLA aipamena

Balagopal T S and Vijayan C.V. Kettita Varappu. State instuitute of laguages, 1973.