@book{38786,
	author = {Bass, Bernard M. and Riggio, Ronald E.},
	title = {Transformational leadership},
	publisher = {L. Erlbaum Associates},
	year = {2006},
	address = {Mahwah (Nueva Jersey, Estados Unidos)},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0623/2005040138-t.html}
}