एपीए उद्धरण

(1984). Resourse atlas of kerala. center for earthscience studies.

शिकागो स्टाइल उद्धरण

Resourse Atlas of Kerala. Trivandrum: center for earthscience studies, 1984.

एमएलए उद्धरण

Resourse Atlas of Kerala. center for earthscience studies, 1984.