Natyashastra
कोसलाग्ग्स्तोशलाश्चैव कलिङ्गा यवना खसाः । द्रविडान्ध्रमहाराष्ट्रा वैष्णा वै वानवासजाः ॥ ३९॥
The people of Kosala, Anga, Kalinga, Yavana, Khasa, Dravida, Andhra, Maharashtra, Vaishnava, and those from the forest regions are also mentioned.
english translation
kosalAggstozalAzcaiva kaliGgA yavanA khasAH । draviDAndhramahArASTrA vaiSNA vai vAnavAsajAH ॥ 39॥
hk transliteration by Sanscript