APA-viite

Samuel, N. M. Census of India 1991: Provisional population totals paper 1 of 1991. Director of Census Operations.

Chicago-tyylinen lähdeviittaus

Samuel, N M. Census of India 1991: Provisional Population Totals Paper 1 of 1991. kerala: Director of Census Operations.

MLA-viite

Samuel, N M. Census of India 1991: Provisional Population Totals Paper 1 of 1991. Director of Census Operations.

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