APA引文

Walter, I. (1973). U.S. trade policy in a changing world economy. Mohr.

芝加哥风格引文

Walter, Ingo. U.S. Trade Policy in a Changing World Economy. Tubingen: Mohr, 1973.

MLA引文

Walter, Ingo. U.S. Trade Policy in a Changing World Economy. Mohr, 1973.

警告：这些引文格式不一定是100％准确.