@book{221413,
	author = {Greene, Robert A. and Tarkan, Laurie.},
	title = {Equilibrio hormonal para tu fertilidad},
	publisher = {Ediciones Urano},
	year = {c2009.},
	address = {Argentina},
	url = {http://www.loc.gov/catdir/toc/ecip0722/2007027904.html}
}