International Energy Agency. (1985). The clean use of coal: A technology review. OECD/IEA.
Chicago-referens (17:e uppl.)International Energy Agency. The Clean Use of Coal: A Technology Review. Paris: OECD/IEA, 1985.
MLA-referens (8:e uppl.)International Energy Agency. The Clean Use of Coal: A Technology Review. OECD/IEA, 1985.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.