Center for Research and Documentation on World Language Problems. (1977). Language Problems and Language Planning. University of Texas Press.
Chicago-Zitierstil (17. Ausg.)Center for Research and Documentation on World Language Problems. Language Problems and Language Planning. Austin, Tex: University of Texas Press, 1977.
MLA-Zitierstil (8. Ausg.)Center for Research and Documentation on World Language Problems. Language Problems and Language Planning. University of Texas Press, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.