एपीए उद्धरण

V T Bhattathirippad. V.T.yude Kathakal. DC Books.

शिकागो स्टाइल उद्धरण

V T Bhattathirippad. V.T.yude Kathakal. Kottayam: DC Books.

एमएलए उद्धरण

V T Bhattathirippad. V.T.yude Kathakal. DC Books.