Sabu Kottukkal. (2008). G.Sankara Pillai: Natakam Jeevitham. Kerala Sahitya Akademi.
Chicago Edition CitationSabu Kottukkal. G.Sankara Pillai: Natakam Jeevitham. Trichur: Kerala Sahitya Akademi, 2008.
MLA Edition CitationSabu Kottukkal. G.Sankara Pillai: Natakam Jeevitham. Kerala Sahitya Akademi, 2008.
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