APA引文

Roy,P N. (2019). International Trade: Theory and Practice (second.). New Age International Publishers.

芝加哥风格引文

Roy,P N. International Trade: Theory and Practice. second. New Delhi: New Age International Publishers, 2019.

MLA引文

Roy,P N. International Trade: Theory and Practice. second. New Age International Publishers, 2019.

警告：这些引文格式不一定是100％准确.