Ehret, C. (2002). The civilizations of Africa: A history to 1800. James Currey.
芝加哥风格引文Ehret, Christopher. The Civilizations of Africa: A History to 1800. Oxford: James Currey, 2002.
MLA引文Ehret, Christopher. The Civilizations of Africa: A History to 1800. James Currey, 2002.
警告：这些引文格式不一定是100％准确.