APA (7th ed.) Citation

General, O. o. t. R. (1971). Census of India 1971. The Author.

Chicago Style (17th ed.) Citation

General, Office of the Registrar. Census of India 1971. The Author, 1971.

MLA (9th ed.) Citation

General, Office of the Registrar. Census of India 1971. The Author, 1971.

Warning: These citations may not always be 100% accurate.