Uṇṇikrṣṇan, P. (1977). Pallakkinṯe śāpaṃ: Kathakaḷ. Sāhityapravarttaka Sahakaraṇasaṅghaṃ : Nāṣanal Bukksṯṯāḷ.
Dyfyniad Arddull ChicagoUṇṇikrṣṇan, Putūr. Pallakkinṯe śāpaṃ: Kathakaḷ. Kōṭṭayaṃ: Sāhityapravarttaka Sahakaraṇasaṅghaṃ : Nāṣanal Bukksṯṯāḷ, 1977.
Dyfyniad MLAUṇṇikrṣṇan, Putūr. Pallakkinṯe śāpaṃ: Kathakaḷ. Sāhityapravarttaka Sahakaraṇasaṅghaṃ : Nāṣanal Bukksṯṯāḷ, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.