Pillai, G. R. (1970). Sahakaranavum samuvikavikasanavum. Kerala Bhasha Institute.
Chicago Style aipamenaPillai, G. R. Sahakaranavum Samuvikavikasanavum. Kerala Bhasha Institute, 1970.
MLA aipamenaPillai, G. R. Sahakaranavum Samuvikavikasanavum. Kerala Bhasha Institute, 1970.
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