@book{4432,
	author = {Steeby, Donald.},
	title = {Alternative Energy : sources and systems},
	publisher = {Cengage Learning,},
	year = {2011.},
	address = {[S.l.] :},
	edition = {1st ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/1111037264/chopaconline-2}
}