B. M.  Doube, ?Dung beetles of southern Africa?, in Dung Beetle Ecology, I.  Hanski and Cambefort, Y., Eds. Princeton: Princeton University Press, 1991, pp. 133-155.

B. M.  Doube, ?Chapter 8. Dung beetles of Southern Africa?, in Dung beetle ecology, I.  Hanski and Cambefort, Y., Eds. Princeton: Princeton University Press, 1991, pp. 133-155.