@book{20273,
	author = {Polit, Denise F., Beck, Cheryl Tatano & Hungler, Bernadette P.},
	title = {Essentials of Nursing Research: Methods, Appraisal, and Utilization/5th},
	publisher = {Lippincott Williams & Wilkins},
	year = {2004},
	address = {Philadelphia},
	note = {Includes glossary, appendix, and index}
}