@book{131612,
	author = {Viëtor, Wilhelm, and Ripman, Walter,},
	title = {Elements of phonetics :},
	publisher = {J.M. Dent & sons, limited;},
	year = {1926.},
	series = {On cover: Dent's modern language series},
	address = {London and Toronto,},
	edition = {9th ed.}
}