एपीए उद्धरण

Census of India. (1991). Economic Tables. Directorate of Census Operations.

शिकागो स्टाइल उद्धरण

Census of India. Economic Tables. Thiruvananthapurm: Directorate of Census Operations, 1991.

एमएलए उद्धरण

Census of India. Economic Tables. Directorate of Census Operations, 1991.