@book{2762,
	author = {Scheiner, Samuel M.,},
	title = {Design and analysis of ecological experiments /},
	publisher = {Oxford University Press,},
	year = {2001.},
	address = {Oxford ;},
	edition = {Segunda edición},
	url = {http://www.loc.gov/catdir/enhancements/fy0610/00035647-t.html}
}