एपीए उद्धरण

Ravivarma, . L. A. (1971). Pracheena Kerala Lipikal. Kerala Sahitya Academy.

शिकागो स्टाइल उद्धरण

Ravivarma, L A. Pracheena Kerala Lipikal. Trichur: Kerala Sahitya Academy, 1971.

एमएलए उद्धरण

Ravivarma, L A. Pracheena Kerala Lipikal. Kerala Sahitya Academy, 1971.