एपीए उद्धरण

Paramesvarayyar, U. S. (1967). Keralasahityacaritram. Department of publications.

शिकागो स्टाइल उद्धरण

Paramesvarayyar, Ullur S. Keralasahityacaritram. Trivandrum: Department of publications, 1967.

एमएलए उद्धरण

Paramesvarayyar, Ullur S. Keralasahityacaritram. Department of publications, 1967.