एपीए उद्धरण

S.N Jayaprakash. Nattuvarthayude kalangal. Kerala Press Academy.

शिकागो स्टाइल उद्धरण

S.N Jayaprakash. Nattuvarthayude Kalangal. Kerala Press Academy.

एमएलए उद्धरण

S.N Jayaprakash. Nattuvarthayude Kalangal. Kerala Press Academy.