參考文獻
THE WORLD TRADE ORGANIZATION, World Trade Report, https://www.wto.org/ENGLISH/res_e/reser_e/wtr_e.htm (last visited May 13, 2019).
THE WORLD TRADE ORGANIZATION, World Trade Report 2018: The future of world trade: How digital technologies are transforming global commerce (2018), https://www.wto.org/english/res_e/publications_e/wtr18_e.htm, and available at https://www.wto.org/english/res_e/publications_e/world_trade_report18_e.pdf (last visited May 13, 2019).