^
Willis, Charles Armine (1995). Johnson, Douglas H. (ed.). The Upper Nile Province handbook: a report on peoples and government in the Southern Sudan, 1931. Oxford University Press. ISBN0197261469.
^ abJohnson, Douglas H. (1982). "Tribal Boundaries and Border Wars: Nuer–Dinka Relations in the Sobat and Zaraf Valleys, c. 1860–1976". The Journal of African History. 23 (2): 183. doi:10.1017/S0021853700020521.
^Michael, Vuziga (2017-11-12). "Baidit Payam of Bor County". Starview publication.com. p. 32.
^Allan, Tony (2012). Handbook of land and water grabs in Africa: foreign direct investment and food and water security. Routledge. p. 451. ISBN1857436695.