@book{140914,
	author = {Bacon, Robert},
	title = {Petroleum Taxes},
	publisher = {World Bank Group},
	year = {1998},
	address = {Washington},
	note = {Navegadores de Internet ; Adobe Acrobat (PDF)},
	url = {http://www1.worldbank.org/viewpoint/HTMLNotes/240/240summary.html}
}