@inbook {Weinreich1968, title = {Empirical Foundation for a Theory of Language Change}, booktitle = {Directions for historical linguistics: A symposium}, year = {1968}, pages = {95{\textendash}188}, publisher = {Univ. of Texas Press}, organization = {Univ. of Texas Press}, address = {Austin, {TX}}, keywords = {Historical linguistics, language change, езикова промяна, историческа лингвистика}, author = {Weinreich, Uriel and Labov, William and Herzog, Marvin I.}, editor = {Lehmann, W. P. and Malkeil, Yakov} }