Hillman Smith, K.; Snyder, P.M.; Tear, T.; Sommerlatte, M. 1981. An aerial reconnaissance of the Shambe Area, Southern Sudan 22-26th April 1981. Report to IUCN/WWF and the Ministry of Wildlife Conservation and Tourism, Southern Region, Sudan (Laebra 1981/010): [unpaginated].
An aerial reconnaissance of the Shambe Area, Southern Sudan 22-26th April 1981