@book{2257,
	author = {McEwen, Melanie, and Wills, Evelyn M.,},
	title = {Theoretical basis for nursing/},
	publisher = {Lippincott Williams & Wilkins ;},
	year = {2007.},
	address = {Philadelphia :},
	edition = {Second (2nd)},
	note = {Includes Bibliographical references and Index.}
}