Tolles, N. A. (1961). Labor costs and international trade. Committee for a National Trade Policy.
芝加哥风格引文Tolles, Newman Arnold. Labor Costs and International Trade. Washington: Committee for a National Trade Policy, 1961.
MLA引文Tolles, Newman Arnold. Labor Costs and International Trade. Committee for a National Trade Policy, 1961.
警告：这些引文格式不一定是100％准确.