Cita APA (7th ed.)
Oliver, R. (1994). Africa since 1800. Cambridge.
Cita Chicago (17th ed.)
Oliver, Ronald. Africa Since 1800. New York: Cambridge, 1994.
Cita MLA (9th ed.)
Oliver, Ronald. Africa Since 1800. Cambridge, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.