@book{37766,
	author = {Rego, Arm�enio. and Cunha, Miguel Pina e.},
	title = {The virtues of leadership},
	publisher = {Oxford University Press,},
	year = {2012.},
	address = {Oxford :},
	url = {http://dx.doi.org/10.1093/acprof:oso/9780199653867.001.0001}
}