Harrison, B. (1974). English as a second and foreign language. Edward Arnold.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarrison, Brian. English as a Second and Foreign Language. Londres, Inglaterra: Edward Arnold, 1974.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHarrison, Brian. English as a Second and Foreign Language. Edward Arnold, 1974.
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