एपीए उद्धरण

Velayudhan Panikkasserry. (2011). Charitra kavatangal. Sahitya Pravarthaka Co-operative Society.

शिकागो स्टाइल उद्धरण

Velayudhan Panikkasserry. Charitra Kavatangal. Kottayam: Sahitya Pravarthaka Co-operative Society, 2011.

एमएलए उद्धरण

Velayudhan Panikkasserry. Charitra Kavatangal. Sahitya Pravarthaka Co-operative Society, 2011.