एपीए उद्धरण

Omana P V. (1990). Nighandukkal Malayalatil. Current Books.

शिकागो स्टाइल उद्धरण

Omana P V. Nighandukkal Malayalatil. Kottayam: Current Books, 1990.

एमएलए उद्धरण

Omana P V. Nighandukkal Malayalatil. Current Books, 1990.