APA
UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE, UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE & UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE. (2013). United nations framework classification for fossil energy and mineral reserves and resources 2009 incorporating specifications for its application. "Geneva,": "United Nations, ".
Chicago
UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE, UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE and UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE. 2013. United nations framework classification for fossil energy and mineral reserves and resources 2009 incorporating specifications for its application. "Geneva,": "United Nations, ".
Harvard
UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE, UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE and UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE. (2013). United nations framework classification for fossil energy and mineral reserves and resources 2009 incorporating specifications for its application. "Geneva,": "United Nations, ".
MLA
UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE, UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE and UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE. United nations framework classification for fossil energy and mineral reserves and resources 2009 incorporating specifications for its application. "Geneva,": "United Nations, ". 2013.