Citazione APA

(1977). Kerala, Director of Census Operations Census of India 1971. Series 9: Kerala. Director of Census Opeartions.

Stile di citazione Chicago

Kerala, Director of Census Operations Census of India 1971. Series 9: Kerala. Trivandrum: Director of Census Opeartions, 1977.

Citazione MLA

Kerala, Director of Census Operations Census of India 1971. Series 9: Kerala. Director of Census Opeartions, 1977.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.