@book{49575,
	author = {Griffin, Emory A.},
	title = {A first look at communication theory /},
	publisher = {McGraw-Hill Higher Education,},
	year = {c2009},
	address = {Boston :},
	edition = {7th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0814/2008002862-t.html}
}