@book{31218,
	author = {Barquero Cabrera, José Daniel.},
	title = {Marketing de clientes ·quien se ha llevado a mi cliente? /},
	publisher = {McGraw-Hill,},
	year = {2007.},
	address = {Bogotá :},
	edition = {2a ed.},
	note = {Incluye indice.}
}