English Language Services, inc. International Trade (5a ed.).
芝加哥风格引文English Language Services, inc. International Trade. 5a ed.
MLA引文English Language Services, inc. International Trade. 5a ed.
警告：这些引文格式不一定是100％准确.
APA引文
English Language Services, inc. International Trade (5a ed.).
芝加哥风格引文English Language Services, inc. International Trade. 5a ed.
MLA引文English Language Services, inc. International Trade. 5a ed.