एपीए उद्धरण

Govt of Kerala. (1985). Block level statistics Kottayam district. Government of Kerala.

शिकागो स्टाइल उद्धरण

Govt of Kerala. Block Level Statistics Kottayam District. Government of Kerala, 1985.

एमएलए उद्धरण

Govt of Kerala. Block Level Statistics Kottayam District. Government of Kerala, 1985.