Velayudhan ,Panikkasseri. (2002). Dr. Palpu. Granthakartha (Current, Kottayam).
Chicago Style aipamenaVelayudhan ,Panikkasseri. Dr. Palpu. Granthakartha (Current, Kottayam): Granthakartha (Current, Kottayam), 2002.
MLA aipamenaVelayudhan ,Panikkasseri. Dr. Palpu. Granthakartha (Current, Kottayam), 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.