APA

Nadel S. . F., . (1944). Races and tribes of Eritrea. Asmara: British Military Administration.

Chicago

Nadel S F, . 1944. Races and tribes of Eritrea. Asmara: British Military Administration.

Harvard

Nadel S. . F., . (1944). Races and tribes of Eritrea. Asmara: British Military Administration.

MLA

Nadel S F, . Races and tribes of Eritrea. Asmara: British Military Administration. 1944.