@book{228097,
	author = {Zenger, John H. and Folkman, Joe.},
	title = {El líder extraordinario},
	publisher = {Bresca Editorial},
	year = {c2008.},
	address = {Barcelona},
	note = {Subtitle on cover : Transformando buenos directivos en líderes extraordinarios},
	url = {http://www.loc.gov/catdir/bios/mh041/2002005908.html}
}