APA (7th ed.) Citation

Calcutta, W. B. a. S. S. o. C. O. (1967). Census of India 1961. Government of India.

Chicago Style (17th ed.) Citation

Calcutta, West Bengal and Sikkim. Superintendent of Census Operations. Census of India 1961. Government of India, 1967.

MLA (9th ed.) Citation

Calcutta, West Bengal and Sikkim. Superintendent of Census Operations. Census of India 1961. Government of India, 1967.

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