APA (7th ed.) Citation

Gann, L. H., & Duignan, P. (1978). The rulers of British Africa, 1870-1914 / (by) L.H. Gann & Peter Duignan. Croom Helm.

Chicago Style (17th ed.) Citation

Gann, L. H., and Peter Duignan. The Rulers of British Africa, 1870-1914 / (by) L.H. Gann & Peter Duignan. London: Croom Helm, 1978.

MLA (9th ed.) Citation

Gann, L. H., and Peter Duignan. The Rulers of British Africa, 1870-1914 / (by) L.H. Gann & Peter Duignan. Croom Helm, 1978.

Warning: These citations may not always be 100% accurate.