@book{72893,
	author = {McLuhan, Marshall, and Gordon, W. Terrence, },
	title = {Understanding media :},
	publisher = {Gingko Press,},
	year = {2003.},
	address = {Corte Madera, CA :},
	edition = {Critical ed.},
	url = {http://www.loc.gov/catdir/toc/ecip044/2003012174.html}
}