एपीए उद्धरण

Gopinathan Nair, P. S. (1990). Janasankhya padhanangal.

शिकागो स्टाइल उद्धरण

Gopinathan Nair, P S. Janasankhya Padhanangal. Thiruvananthapuram, Kerala Bhasha Institute, 1990.

एमएलए उद्धरण

Gopinathan Nair, P S. Janasankhya Padhanangal. 1990.