एपीए उद्धरण

Gopakumar, C. S. (2011). Kalavasthayum krishiyum. Current Books.

शिकागो स्टाइल उद्धरण

Gopakumar, C. Setc. Kalavasthayum Krishiyum. Thrissur: Current Books, 2011.

एमएलए उद्धरण

Gopakumar, C. Setc. Kalavasthayum Krishiyum. Current Books, 2011.