@book{100368,
	author = {Tecpan Sedano, Sara Edith and Valdivia Alcalá, Ramón},
	title = {Valoración económica del cerro del Tezcutzingo, Texcoco, Estado de México},
	publisher = {El autor,},
	year = {2010.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/112027.pdf}
}