Baker, A. (1981). Ship or sheep?: An intermediate pronunciation course (2nd ed., new ed.). Cambridge University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBaker, Ann. Ship or Sheep?: An Intermediate Pronunciation Course. 2nd ed., new ed. Cambridge ; New York: Cambridge University Press, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBaker, Ann. Ship or Sheep?: An Intermediate Pronunciation Course. 2nd ed., new ed. Cambridge University Press, 1981.
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