APA (7th ed.) Citation

Mathieson, W. L. (1929). Great Britain and the slave trade, 1839-1865. Longmans, Green.

Chicago Style (17th ed.) Citation

Mathieson, William Law. Great Britain and the Slave Trade, 1839-1865. London: Longmans, Green, 1929.

MLA (8th ed.) Citation

Mathieson, William Law. Great Britain and the Slave Trade, 1839-1865. Longmans, Green, 1929.

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