APA (7th ed.) Citation

Crooks, J. J. (1972). A history of the colony of Sierra Leone, Western Africa. Cass.

Chicago Style (17th ed.) Citation

Crooks, J. J. A History of the Colony of Sierra Leone, Western Africa. London: Cass, 1972.

MLA (8th ed.) Citation

Crooks, J. J. A History of the Colony of Sierra Leone, Western Africa. Cass, 1972.