@book{15881,
	author = {Tschirner, Erwin P., and Nikolai, Brigitte.},
	title = {Kontakte :},
	publisher = {McGraw-Hill Higher Education,},
	year = {c2009.},
	address = {Boston :},
	edition = {6th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0808/2007038249-b.html}
}