Heertje, A. (1984). The U.S.A. in the world economy. Freeman, Cooper.
芝加哥风格引文Heertje, Arnold. The U.S.A. in the World Economy. San Francisco, CA: Freeman, Cooper, 1984.
MLA引文Heertje, Arnold. The U.S.A. in the World Economy. Freeman, Cooper, 1984.
警告：这些引文格式不一定是100％准确.