Narayanan Thonnakkal. (1987). G Sankarakuruppinte sahitya prapancham. National.
Chicago Edition CitationNarayanan Thonnakkal. G Sankarakuruppinte Sahitya Prapancham. Kottayam: National, 1987.
MLA Edition CitationNarayanan Thonnakkal. G Sankarakuruppinte Sahitya Prapancham. National, 1987.
Warning: These citations may not always be 100% accurate.