Center for Research and Documentation on World Language Problems. (1977). Language Problems and Language Planning. University of Texas Press.
Citace podle Chicago (17th ed.)Center for Research and Documentation on World Language Problems. Language Problems and Language Planning. Austin, Tex: University of Texas Press, 1977.
Citace podle MLA (8th ed.)Center for Research and Documentation on World Language Problems. Language Problems and Language Planning. University of Texas Press, 1977.
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