APA
Cerulli E., . (1956). Peoples of south-west Ethiopia and its borderland. London: International African Institute.
Chicago
Cerulli Ernesta, . 1956. Peoples of south-west Ethiopia and its borderland. London: International African Institute.
Harvard
Cerulli E., . (1956). Peoples of south-west Ethiopia and its borderland. London: International African Institute.
MLA
Cerulli Ernesta, . Peoples of south-west Ethiopia and its borderland. London: International African Institute. 1956.