@book{7786,
	author = {Ladefoged, Peter.},
	title = {Elements of acoustic phonetics /},
	publisher = {University of Chicago Press,},
	year = {1996.},
	address = {Chicago :},
	edition = {2nd ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0608/95009057-d.html}
}