ALEXANDER, L. (1993). First Think First New Concept English (recorded Drills: Tapescript) L.g. Alexander. Kanisius.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रALEXANDER, L.G. First Think First New Concept English (recorded Drills: Tapescript) L.g. Alexander. Kanisius, 1993.
एमएलए (8वां संस्करण) प्रशस्ति पत्रALEXANDER, L.G. First Think First New Concept English (recorded Drills: Tapescript) L.g. Alexander. Kanisius, 1993.
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