Ramavarma, A. (2009). Deveedevanmar keraleeya sahitya kalarangangalil. Current books.
Dyfyniad Arddull ChicagoRamavarma, Ambalappuzha. Deveedevanmar Keraleeya Sahitya Kalarangangalil. Kottayam: Current books, 2009.
Dyfyniad MLARamavarma, Ambalappuzha. Deveedevanmar Keraleeya Sahitya Kalarangangalil. Current books, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.