@book{49861,
	author = {Bernstein, Douglas A. , and Borkovec, Thomas D.,},
	title = {Entrenamiento en relajación progresiva :},
	publisher = {Desclée de Brouwer,},
	year = {1983.},
	series = {Biblioteca de psicología ;},
	address = {Bilbao :},
	edition = {12a edición.}
}