गिबिसिन च'लाफोरनि सोमोन्दै फोरमायथिनि गाहाय फुंखाया संगम मुगानि गोदो-गोदायनि तामिल थुनलाइफोर (सी.ए.150)।
The main sources of information about the early Cholas are ancient Tamil literature of the Sangam Period (ca. 150).