Campbell, G. (1986). Specimens of Languages of India: Including Those of the Aboriginal Tribes of Bengal, the Central Provinces and the Eastern Frontier (Reprint of the 1874 Edition.). Asian Educational Services.

Campbell, G. Specimens of Languages of India: Including Those of the Aboriginal Tribes of Bengal, the Central Provinces and the Eastern Frontier. Reprint of the 1874 Edition. New Delhi: Asian Educational Services, 1986.

Campbell, G. Specimens of Languages of India: Including Those of the Aboriginal Tribes of Bengal, the Central Provinces and the Eastern Frontier. Reprint of the 1874 Edition. Asian Educational Services, 1986.