Παραπομπή APA

Gann, L. H. (1971). Central Africa: Former British states. Prentice Hall.

Παραπομπή Chicago Style

Gann, Lewis H. Central Africa: Former British States. New Jersy: Prentice Hall, 1971.

Παραπομπή MLA

Gann, Lewis H. Central Africa: Former British States. Prentice Hall, 1971.