ebrary, Inc, & Caldwell, A. J. (2010). U.S. trade, protectionism and the global economic downturn. Nova Science Publishers, Inc..
Chicago Style (17th ed.) Citationebrary, Inc, and Andrew J. Caldwell. U.S. Trade, Protectionism and the Global Economic Downturn. New York: Nova Science Publishers, Inc., 2010.
MLA引文ebrary, Inc, and Andrew J. Caldwell. U.S. Trade, Protectionism and the Global Economic Downturn. Nova Science Publishers, Inc., 2010.
警告:這些引文格式不一定是100%准確.