Gopakumar Ambalappuzha. (2011). Thirakal maikkatha padamudrakal. Sahithya Pravarthaka Co-operative Society Ltd.
Chicago Style aipamenaGopakumar Ambalappuzha. Thirakal Maikkatha Padamudrakal. Kottayam: Sahithya Pravarthaka Co-operative Society Ltd, 2011.
MLA aipamenaGopakumar Ambalappuzha. Thirakal Maikkatha Padamudrakal. Sahithya Pravarthaka Co-operative Society Ltd, 2011.
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