@incollection{:/content/books/9789210055253c039, author = "United Nations", title = "International trade of natural gas (Principalimporters/exporters), 2017 and 2018", booktitle = "Energy Statistics Yearbook 2018", publisher = "United Nations", year = "2021", pages = "370-373", url = "https://www.un-ilibrary.org/content/books/9789210055253c039" }