@book{196377,
	author = {Castanyer Mayer-Spiess, Olga and Ortega, Estela},
	title = {Por qué no logro ser asertivo?},
	publisher = {Desclée de Brouwer},
	year = {c2001.},
	series = {Colección Serendipity},
	address = {Bilbao},
	edition = {2a ed.}
}