@incollection{:/content/books/9789287041609s005-c355, author = "World Trade Organization", title = "Tonga", booktitle = "Profils Commerciaux 2017", publisher = "WTO", year = "2017", pages = "368-369", url = "https://www.wto-ilibrary.org/content/books/9789287041609s005-c355" }