@book{20276,
	author = {Polit, Denise F. & Beck, Cheryl Tatano},
	title = {Essentials of Nursing Research: Methods, Appraisal, and Utilization/6th},
	publisher = {Lippincott Williams & Wilkins},
	year = {2006},
	address = {Philadelphia},
	note = {Includes glossary, appendix, and index}
}