Demographic Research Centre (Kerala, India). (1977). Demographic report of Kerala, 1906-61, with an addendum for 1971. Demographic Research Centre, Bureau of Economics and Statistics, Govt. of Kerala.
Chicago-referens (17:e uppl.)Demographic Research Centre (Kerala, India). Demographic Report of Kerala, 1906-61, with an Addendum for 1971. Trivandrum: Demographic Research Centre, Bureau of Economics and Statistics, Govt. of Kerala, 1977.
MLA-referens (8:e uppl.)Demographic Research Centre (Kerala, India). Demographic Report of Kerala, 1906-61, with an Addendum for 1971. Demographic Research Centre, Bureau of Economics and Statistics, Govt. of Kerala, 1977.
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