@book{123149,
	author = {García Montero, Mercedes },
	title = {Presidentes y parlamentos : },
	publisher = {Centro de Investigaciones Sociológicas,},
	year = {2009.},
	address = {Madrid :},
	edition = {primera edición },
	url = {http://www.loc.gov/catdir/enhancements/fy0910/2009390338-d.html}
}