@book{98607,
	author = {Zavala Hernández, Mirna Francisca.},
	title = {Pemex y la reforma energética :},
	publisher = {El autor,},
	year = {2010.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/110265.pdf}
}