Usha Nambudiripad. (1994). Samuhika Bhasha Vijnanam (Study on Sociolinguistics). State Institute of Language.
Čikaški stil citiranjaUsha Nambudiripad. Samuhika Bhasha Vijnanam (Study on Sociolinguistics). TVPM: State Institute of Language, 1994.
MLA način citiranjaUsha Nambudiripad. Samuhika Bhasha Vijnanam (Study on Sociolinguistics). State Institute of Language, 1994.
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