@book{12969,
	author = {Pojman, Louis P. and Pojman, Paul.},
	title = {Environmental ethics :},
	publisher = {Wadsworth,},
	year = {c2012.},
	address = {Boston, Mass. :},
	edition = {6th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy1215/2010936474-d.html}
}