@book{31851,
	author = {Polit, Denise F.},
	title = {Essentials of nursing research : appraising evidence for nursing practice /},
	publisher = {Wolters Kluwer Health/Lippincott Williams & Wilkins,},
	year = {2014},
	address = {Philadelphia :},
	edition = {8th},
	url = {http://192.168.201.76/multim/m10365/cover10365.jpg}
}