Kerala (India). Bureau of Economics and Statistics. Employment Division & Gopinathan, P. (1966). Factbook on manpower.
Čikaški stil citiranja (17. izdanje)Kerala (India). Bureau of Economics and Statistics. Employment Division i P. Gopinathan. Factbook on Manpower. Trivandrum, 1966.
MLA način citiranja (8. izdanje)Kerala (India). Bureau of Economics and Statistics. Employment Division i P. Gopinathan. Factbook on Manpower. 1966.
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