Beckwith, C., & Fisher, A. (1990). African ark: People and ancient cultures of Ethiopia and the Horn of Africa. Harry N. Abrams, Incorporated.
Chicago Style aipamenaBeckwith, Carol, and Angela Fisher. African Ark: People and Ancient Cultures of Ethiopia and the Horn of Africa. New York: Harry N. Abrams, Incorporated, 1990.
MLA aipamenaBeckwith, Carol, and Angela Fisher. African Ark: People and Ancient Cultures of Ethiopia and the Horn of Africa. Harry N. Abrams, Incorporated, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.