एपीए उद्धरण

Narayanapilla, P. K. (1949). Padyaratnam. The director, Dept of Publication, Uni. of Kerala.

शिकागो स्टाइल उद्धरण

Narayanapilla, P K. Padyaratnam. Trivandrum: The director, Dept of Publication, Uni. of Kerala, 1949.

एमएलए उद्धरण

Narayanapilla, P K. Padyaratnam. The director, Dept of Publication, Uni. of Kerala, 1949.