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.