@book{20294,
	author = {Unigarro Gutierrez, Manuel Antonio},
	title = {Educación virtual: Encuentro formativo en el ciberespacio /},
	publisher = {Unad,},
	year = {2004.},
	series = {Coleccion hexdoc},
	address = {Bucaramanga :},
	edition = {2.}
}