@book{37869,
	author = {Polit, Denise F. and Beck, Cheryl Tatano.},
	title = {Fundamentos de pesquisa em enfermagem :},
	publisher = {Artmed,},
	year = {2011.},
	series = {Enfermagem.},
	address = {Porto Alegre:},
	edition = {7. ed. -},
	note = {Título original: Essentials of nursing research: appraising evidence for nursing practice}
}