@book{126797,
	author = {Schlieben-Lange, Brigitte.},
	title = {Iniciación a la sociolingüística},
	publisher = {Editorial Gredos},
	year = {D.L. 1977.},
	series = {Biblioteca románica hispánica},
	address = {Madrid},
	note = {Original title: Soziolinguistik.}
}