Ramachandran Nair, C. G. (2002). Viswa vijnana gradhangal. The State Institute of Languages.
Dyfyniad Arddull ChicagoRamachandran Nair, C. G. Viswa Vijnana Gradhangal. Thiruvananthapuram: The State Institute of Languages, 2002.
Dyfyniad MLARamachandran Nair, C. G. Viswa Vijnana Gradhangal. The State Institute of Languages, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.