Trích dẫn APA

(1991). Kerala, Director of Census Operations. Census of India 1991, Series 12. Kerala. Director of Census Operations.

Trích dẫn kiểu Chicago

Kerala, Director of Census Operations. Census of India 1991, Series 12. Kerala. Trivandrum: Director of Census Operations, 1991.

Trích dẫn MLA

Kerala, Director of Census Operations. Census of India 1991, Series 12. Kerala. Director of Census Operations, 1991.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.