@book{109433,
	author = {Herbert, Robert K., and ebrary, Inc.},
	title = {Language universals, markedness theory, and natural phonetic processes},
	publisher = {Mouton de Gruyter,},
	year = {c1986.},
	address = {Berlin ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10598290}
}