Abuur nooc ka mid ah weedhan adag'' Yaa u hadla Yurub ', St. Martin's Press, 1978.
Dabcan, qaab kale oo adag oo weedhan ah waa "' Yaa u hadla Yurub ',' St. Martin's Press, 1978 oo wuxuu sii waday inuu wax ku baro sharciga caalamiga ah iyo cilmiga siyaasada ee Kulliyadda Harvard iyo Jaamacadda Princeton. "