ebrary, Inc, & Caldwell, A. J. (2010). U.S. trade, protectionism and the global economic downturn. Nova Science Publishers, Inc..
芝加哥风格引文ebrary, Inc, 与 Andrew J. Caldwell. U.S. Trade, Protectionism and the Global Economic Downturn. New York: Nova Science Publishers, Inc., 2010.
MLA引文ebrary, Inc, 与 Andrew J. Caldwell. U.S. Trade, Protectionism and the Global Economic Downturn. Nova Science Publishers, Inc., 2010.
警告：这些引文格式不一定是100％准确.