एपीए उद्धरण

Vennikulam Gopalakurup. (1970). Prabhatha Sahithi. Dr. P.K. Narayana Pillai Shashttyabdapoorthi Committee.

शिकागो स्टाइल उद्धरण

Vennikulam Gopalakurup. Prabhatha Sahithi. Trivandrum: Dr. P.K. Narayana Pillai Shashttyabdapoorthi Committee, 1970.

एमएलए उद्धरण

Vennikulam Gopalakurup. Prabhatha Sahithi. Dr. P.K. Narayana Pillai Shashttyabdapoorthi Committee, 1970.