Sterling, T. (1963). Exploration of africa (First edition.). American Heritage Publishing Company.
Cita Chicago (17th ed.)Sterling, Thomas. Exploration of Africa. First edition. New York: American Heritage Publishing Company, 1963.
Cita MLA (9th ed.)Sterling, Thomas. Exploration of Africa. First edition. American Heritage Publishing Company, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.