एपीए उद्धरण

Velayudhan Panikkassery. (2001). Charithrathinte prabhathakiranangal. Velayudhan Panikkassery.

शिकागो स्टाइल उद्धरण

Velayudhan Panikkassery. Charithrathinte Prabhathakiranangal. Kottayam: Velayudhan Panikkassery, 2001.

एमएलए उद्धरण

Velayudhan Panikkassery. Charithrathinte Prabhathakiranangal. Velayudhan Panikkassery, 2001.