@book{219936,
	author = {Papalia, Diane E.},
	title = {Desarrollo del adulto y vejez},
	publisher = {McGraw-Hill},
	year = {c2009.},
	address = {México},
	edition = {3rd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0642/2006040844-d.html}
}