Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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