APA (7th ed.) Citation

Mathieson, W. L. (1967). Great Britain and the slave trade, 1839-1865. Octagon Books.

Chicago Style (17th ed.) Citation

Mathieson, William Law. Great Britain and the Slave Trade, 1839-1865. New York: Octagon Books, 1967.

MLA (8th ed.) Citation

Mathieson, William Law. Great Britain and the Slave Trade, 1839-1865. Octagon Books, 1967.

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