Cita APA (7th ed.)

Sommers, J. W. (1965). Bibliography of African geography, 1940-1964. s. n.].

Cita Chicago (17th ed.)

Sommers, John W. Bibliography of African Geography, 1940-1964. [Hanover, N. H: s. n.], 1965.

Cita MLA (9th ed.)

Sommers, John W. Bibliography of African Geography, 1940-1964. s. n.], 1965.