एपीए उद्धरण

Goverment of Kerala. (1980). Statistics for planning 1980. Kerala.

शिकागो स्टाइल उद्धरण

Goverment of Kerala. Statistics for Planning 1980. Kerala, 1980.

एमएलए उद्धरण

Goverment of Kerala. Statistics for Planning 1980. Kerala, 1980.