APA (7th ed.) Citation

Livingstone, D., & Chamberlin, D. (1969). Some letters from Livingstone, 1840-1872. Negro Universities Press.

Chicago Style (17th ed.) Citation

Livingstone, David, and David Chamberlin. Some Letters from Livingstone, 1840-1872. New York: Negro Universities Press, 1969.

MLA (9th ed.) Citation

Livingstone, David, and David Chamberlin. Some Letters from Livingstone, 1840-1872. Negro Universities Press, 1969.