@book{90118,
	author = {Vega Guzman, José Porfirio.},
	title = {Productividad del distrito de riego No. 075 Río Fuerte, Sinaloa /},
	publisher = {El autor,},
	year = {2005.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/101648.pdf}
}