@book{137167,
	author = {World Petroleum Congress, WPC},
	title = {Sitio Web Institucional},
	publisher = {World Petroleum Congress, WPC},
	year = {2002},
	address = {London},
	note = {Sitio Web visitado en julio de 2002. ; Navegadores de Internet},
	url = {http://www.world-petroleum.org/}
}