Riddell, R. (2007). Does foreign aid really work? Oxford University Press.
芝加哥风格引文Riddell, Roger. Does Foreign Aid Really Work? Oxford ; New York: Oxford University Press, 2007.
MLA引文Riddell, Roger. Does Foreign Aid Really Work? Oxford University Press, 2007.
警告：这些引文格式不一定是100％准确.