एपीए उद्धरण

Bharathan, P. (1975). Intyayute Bhuvijnanam. State Institute of Languages.

शिकागो स्टाइल उद्धरण

Bharathan, P.K. Intyayute Bhuvijnanam. Trivandrum: State Institute of Languages, 1975.

एमएलए उद्धरण

Bharathan, P.K. Intyayute Bhuvijnanam. State Institute of Languages, 1975.