एपीए उद्धरण

Narayanapilla, P. K. (1950). Pracina Malayala Gadyamatrkakal. University of Kerala; Department of Publications.

शिकागो स्टाइल उद्धरण

Narayanapilla, P K. Pracina Malayala Gadyamatrkakal. Trivandrum: University of Kerala; Department of Publications, 1950.

एमएलए उद्धरण

Narayanapilla, P K. Pracina Malayala Gadyamatrkakal. University of Kerala; Department of Publications, 1950.