@book{177639,
	author = {Polgar, Stephen and Thomas, Shane A.},
	title = {Introducción a la investigación en las ciencias de la salud},
	publisher = {Churchill Livingstone,},
	year = {1993.},
	address = {Barcelona :},
	edition = {2ed.},
	note = {Compra : Lib. Academica 96/01/18.}
}