Sankara Pillai, G. (1990). Ibsente nadakasankalpam. State Institute of Languages.
Dyfyniad Arddull ChicagoSankara Pillai, G. Ibsente Nadakasankalpam. Thiruvananthapuram: State Institute of Languages, 1990.
Dyfyniad MLASankara Pillai, G. Ibsente Nadakasankalpam. State Institute of Languages, 1990.
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