@incollection{:/content/books/9789210041669c005, author = "United Nations Department of Economic and Social Affairs", title = "Institutional units and sectors", booktitle = "System of National Accounts 1993", publisher = "United Nations", year = "2021", pages = "103-136", url = "https://www.un-ilibrary.org/content/books/9789210041669c005" }