एपीए उद्धरण

K Balachandran Thampi. (1997). Natural resources of Kerala. WWF for nature.

शिकागो स्टाइल उद्धरण

K Balachandran Thampi. Natural Resources of Kerala. Trivandrum: WWF for nature, 1997.

एमएलए उद्धरण

K Balachandran Thampi. Natural Resources of Kerala. WWF for nature, 1997.