@book{220727,
	author = {Picasso, Marina. and Valentin, Louis.},
	title = {Picasso, mi abuelo},
	publisher = {Plaza & Janés Editores},
	year = {2002.},
	address = {Barcelona},
	url = {http://www.loc.gov/catdir/enhancements/fy0720/2001048376-s.html}
}