APA (7th ed.) Citation

Spears, J. R. (1969). The American slave-trade: An account of its origin, growth and suppression. Negro History Press.

Chicago Style (17th ed.) Citation

Spears, John Randolph. The American Slave-trade: An Account of Its Origin, Growth and Suppression. Detroit: Negro History Press, 1969.

MLA (9th ed.) Citation

Spears, John Randolph. The American Slave-trade: An Account of Its Origin, Growth and Suppression. Negro History Press, 1969.