APA (7th ed.) Citation

Schultze, A., & Benton, P. A. (1968). The Sultanate of Bornu. Cass.

Chicago Style (17th ed.) Citation

Schultze, Arnold, and Philip Askell Benton. The Sultanate of Bornu. [London]: Cass, 1968.

MLA (9th ed.) Citation

Schultze, Arnold, and Philip Askell Benton. The Sultanate of Bornu. Cass, 1968.

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