Center for Research and Documentation on World Language Problems. (1977). Language Problems and Language Planning. University of Texas Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCenter for Research and Documentation on World Language Problems. Language Problems and Language Planning. Austin, Tex: University of Texas Press, 1977.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCenter for Research and Documentation on World Language Problems. Language Problems and Language Planning. University of Texas Press, 1977.
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