Crowder, M. (1968). West Africa under colonial rule. Northwesstern.
芝加哥风格引文Crowder, Michael. West Africa Under Colonial Rule. Evanston: Northwesstern, 1968.
MLA引文Crowder, Michael. West Africa Under Colonial Rule. Northwesstern, 1968.
警告：这些引文格式不一定是100％准确.