APA (7th ed.) Citation

Padmanabha, P. (1985). Census of India 1981. Census of India 1981.

Chicago Style (17th ed.) Citation

Padmanabha, Pidathala. "Census of India 1981." Census of India 1981 1985.

MLA (8th ed.) Citation

Padmanabha, Pidathala. "Census of India 1981." Census of India 1981, 1985.

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