Gramaprakas, N. R. (2009). Natakam: Padavum prayogavum. Kerala Sahitya Akademi.
Chicago Edition CitationGramaprakas, N. R. Natakam: Padavum Prayogavum. Thrissur: Kerala Sahitya Akademi, 2009.
MLA Edition CitationGramaprakas, N. R. Natakam: Padavum Prayogavum. Kerala Sahitya Akademi, 2009.
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