@book{59250,
	author = {Langston, Craig A and Ding, Grace K. C},
	title = {Sustainable practices in the built environment},
	publisher = {BUTTERWORTH HEINEMANN},
	year = {2001},
	address = {Oxford:},
	edition = {2nd ed.},
	note = {Includes bibliographical references and index.},
	url = {http://www.loc.gov/catdir/toc/els031/2001035007.html}
}