APA

Gann L. H., Duignan P., . (1967). Burden of empire: an appraisal of Western colonalism in Africa south of the Sahara. New York: F. A. Praeger.

Chicago

Gann Lewis H, Duignan Peter, . 1967. Burden of empire: an appraisal of Western colonalism in Africa south of the Sahara. New York: F. A. Praeger.

Harvard

Gann L. H., Duignan P., . (1967). Burden of empire: an appraisal of Western colonalism in Africa south of the Sahara. New York: F. A. Praeger.

MLA

Gann Lewis H, Duignan Peter, . Burden of empire: an appraisal of Western colonalism in Africa south of the Sahara. New York: F. A. Praeger. 1967.