@book{12764, author = {McEwen, Melanie. and Wills, Evelyn M.}, title = {Theoretical basis for nursing /}, publisher = {Wolters Kluwer/Lippincott Williams & Wilkins,}, year = {c2011.}, address = {Philadelphia :}, edition = {3rd ed.}, url = {http://www.loc.gov/catdir/enhancements/fy1010/2009033469-d.html} }