@book{296043,
	author = {Polit, Denise F. and Hungler, Bernadette P.},
	title = {Investigación científica en ciencias de la salud / Denise F. Polit, Bernadette P. Hungler},
	publisher = {Interamericana},
	year = {1994},
	address = {México},
	edition = {4a ed.}
}