एपीए उद्धरण

Anil Kumar, A. V. (2001). K. P. R. Gopalan. Dept of cultural publication,Govt of Kerala..

शिकागो स्टाइल उद्धरण

Anil Kumar, A. V. K. P. R. Gopalan. Thiruvananthapuram: Dept of cultural publication,Govt of Kerala., 2001.

एमएलए उद्धरण

Anil Kumar, A. V. K. P. R. Gopalan. Dept of cultural publication,Govt of Kerala., 2001.