@book{144310,
	author = {Hart},
	title = {Oil & Gas Investor.com},
	publisher = {Chemical Week Associates},
	address = {Nueva York},
	note = {Sitio visitado en enero de 2003 ; Navegadores de Internet ; Adobe Acrobat (PDF)},
	url = {http://www.oilandgasinvestor.com/}
}