एपीए उद्धरण

Director of Census Operations. (1977). Census 1971. Director of Census Operations.

शिकागो स्टाइल उद्धरण

Director of Census Operations. Census 1971. Trivandrum: Director of Census Operations, 1977.

एमएलए उद्धरण

Director of Census Operations. Census 1971. Director of Census Operations, 1977.