@book{83689,
	author = {Olvera Martínez, José Alfredo.},
	title = {La pitaya (Stenocereus griseus Hawork y Stenocereus stellatus Pfeiffer) una alternativa productiva en la mixteca baja oaxaqueña},
	publisher = {El autor,},
	year = {[2001].},
	address = {Chapingo, Méx. :}
}