@book{79589,
	author = {Barker, L. Randol},
	title = {Principles of ambulatory medicine /},
	publisher = {Lippincott Williams & Wilkins,},
	year = {2003.},
	address = {Philadelphia :},
	edition = {6th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0711/2001050739-d.html}
}