APA

LEWICKI T., . (1969). Arabic external sources for the history of Africa to the south of Sahara. Wroclaw: Polska Akademia Nauk.

Chicago

LEWICKI Tadeusz, . 1969. Arabic external sources for the history of Africa to the south of Sahara. Wroclaw: Polska Akademia Nauk.

Harvard

LEWICKI T., . (1969). Arabic external sources for the history of Africa to the south of Sahara. Wroclaw: Polska Akademia Nauk.

MLA

LEWICKI Tadeusz, . Arabic external sources for the history of Africa to the south of Sahara. Wroclaw: Polska Akademia Nauk. 1969.