Rumsey, Alan. 1982. "An Intra-sentence Grammar of Ungarinjin, North-western Australia." 86: xii+179+19. Canberra: Research School of Pacific and Asian Studies, Australian National University.
Rose, David. 2001. "The Western Desert Code: An Australian Cryptogrammar." 513: xvi+482. Canberra: Research School of Pacific and Asian Studies, Australian National University.
Ridley, William. 1856. "Kamilaroi Tribe of Australians and Their Dialect, in a Letter To Dr. Hodgkin." In Journal of the Ethnological Society of London, 4: 285-293.