Roy,P N. (2019). International Trade: Theory and Practice (second.). New Age International Publishers.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Roy,P N. International Trade: Theory and Practice. second. New Delhi: New Age International Publishers, 2019.
MLA -ийн эшлэл (9 дэх хэвлэлт)Roy,P N. International Trade: Theory and Practice. second. New Age International Publishers, 2019.