Bonsma, H.C.; Rose, P.D.; Quinlan, John; Claassens, C.C.; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
Very little is known of the origin of the Ronderib-Afrikaner sheep, but it is generally believed to have been developed by selection from the indigenous sheep of the fat-tailed type which were in the posession of the ...