1. Andersson C. J.(1836).Lake Ngami. London.
2. Notes on the mound‐building birds of Australia, with particulars of features peculiar to the mallee‐fowl, Leipoa ocellata Gould, and a suggestion as to their origin;Ashby Edwin;Lake Ngami. (11),1922
3. Audubon J. J.(1842).The birds of America. New York.
4. Bailey John W.(1946).The mammals of Virginia. Richmond.
5. Mammals of New Mexico.