(1990). General history of Africa: Methodology and African prehistory. California: University of California Press.
Chicago Style aipamenaGeneral History of Africa: Methodology and African Prehistory. California: University of California Press, 1990.
MLA aipamenaGeneral History of Africa: Methodology and African Prehistory. California: University of California Press, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.