@book{91478,
	author = {Lagunes Fortiz, Erika.},
	title = {Descripción de la variedad "Chapingo" de verdolaga (Portucaca oleracea L.) /},
	publisher = {El autor,},
	year = {2005.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/103014.pdf}
}