India. Office of the Registrar General. (1987). Census of India 1981 Series 10: Kerala general economic tables ,Tables B 21 and B 22. Controller of Publications.
Chicago Edition CitationIndia. Office of the Registrar General. Census of India 1981 Series 10: Kerala General Economic Tables ,Tables B 21 and B 22. Delhi: Controller of Publications, 1987.
MLA Edition CitationIndia. Office of the Registrar General. Census of India 1981 Series 10: Kerala General Economic Tables ,Tables B 21 and B 22. Controller of Publications, 1987.
Warning: These citations may not always be 100% accurate.