Padmanabhan, P. (2007). Keralathile pakshikkoodukal. State Institute of Languages, Kerala.
Čikaški stil citiranjaPadmanabhan, P.V. Keralathile Pakshikkoodukal. Thiruvananthapuram: State Institute of Languages, Kerala, 2007.
MLA način citiranjaPadmanabhan, P.V. Keralathile Pakshikkoodukal. State Institute of Languages, Kerala, 2007.
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