Sottas, E. (1985). The least developed countries: An introduction to the LCDs and to the substantial new programme of action for them. United Nations.
芝加哥风格引文Sottas, Eric. The Least Developed Countries: An Introduction to the LCDs and to the Substantial New Programme of Action for Them. New York, N. Y: United Nations, 1985.
MLA引文Sottas, Eric. The Least Developed Countries: An Introduction to the LCDs and to the Substantial New Programme of Action for Them. United Nations, 1985.
警告：这些引文格式不一定是100％准确.