Ryrie, W. (1999). First World, Third World (2.). Macmillan Press limited.
芝加哥风格引文Ryrie, Willaim. First World, Third World. 2. London: Macmillan Press limited, 1999.
MLA引文Ryrie, Willaim. First World, Third World. 2. Macmillan Press limited, 1999.
警告：这些引文格式不一定是100％准确.