APA (7th ed.) Citation

Middleton, H. (1857). Economical causes of slavery in the United States, and obstacles to abolition. Robert Hardwicke.

Chicago Style (17th ed.) Citation

Middleton, Henry. Economical Causes of Slavery in the United States, and Obstacles to Abolition. London: Robert Hardwicke, 1857.

MLA (8th ed.) Citation

Middleton, Henry. Economical Causes of Slavery in the United States, and Obstacles to Abolition. Robert Hardwicke, 1857.

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