According to Norman Tindale's estimation, Ngiyampaa tribal lands extended over some 6,600 square miles (17,000 km2) in the territory lying south of the south bank of the Barwon and Darling rivers, from Brewarrina to Dunlop. Their area included Yanda Creek down to the source of Mulga Creek, and took in the Bogan River. The Weilwan were on their southeastern flank, the Gamilaraay northeast, the Wangaibon southwest while the Paakantyi lay to their west and northwest.
- Dixon, R. M. W. (2002). Australian Languages: Their Nature and Development. Cambridge University Press. ISBN 978-0-521-47378-1.
- Donaldson, Tamsin (1984). "What's in a name? An etymological view of land, language and social identification from central western New South Wales" (PDF). Aboriginal History. 8 (1): 21–44.
- Donaldson, Tamsin (1985). "From Speaking Ngiyampa to Speaking English". Aboriginal History. 9 (1-2): 126–147. JSTOR 24045833.
- Tindale, Norman Barnett (1974). "Ngemba (NSW)". Aboriginal Tribes of Australia: Their Terrain, Environmental Controls, Distribution, Limits, and Proper Names. Australian National University.