Thusu, K. N. (1977). The Pengo Porajas of Koraput: An ethnographic survey. Anthropological Survey of India, Govt. of India.
Chicago-referens (17:e uppl.)Thusu, Kidar Nath. The Pengo Porajas of Koraput: An Ethnographic Survey. Calcutta: Anthropological Survey of India, Govt. of India, 1977.
MLA-referens (8:e uppl.)Thusu, Kidar Nath. The Pengo Porajas of Koraput: An Ethnographic Survey. Anthropological Survey of India, Govt. of India, 1977.
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