@book{137160,
	author = {Society of Petroleum Engineers, SPE},
	title = {Sitio Web Institucional},
	publisher = {Society of Petroleum Engineers, SPE},
	year = {2001},
	address = {Dallas},
	note = {Sitio Web visitado en julio de 2002. ; Navegadores de Internet},
	url = {http://www.spe.org/}
}