Tietueen sitaatit
APA-viiteUnited Nations. Economic Commission for Europe. (2010). United Nations framework classification for fossil energy and mineral reserves and resources 2009. United Nations.
Chicago-tyylinen lähdeviittausUnited Nations. Economic Commission for Europe. United Nations Framework Classification for Fossil Energy and Mineral Reserves and Resources 2009. New York [N.Y.] ; Geneva: United Nations, 2010.
MLA-viiteUnited Nations. Economic Commission for Europe. United Nations Framework Classification for Fossil Energy and Mineral Reserves and Resources 2009. United Nations, 2010.
Harvard-tyylinen lähdeviittausUnited Nations. Economic Commission for Europe. 2010. United Nations framework classification for fossil energy and mineral reserves and resources 2009. New York [N.Y.] ; Geneva: United Nations.