Peaty, D. (1984). Discovery for students at post-intermediate level (1a. ed.). Oxford University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPeaty, David. Discovery for Students at Post-intermediate Level. 1a. ed. Oxford: Oxford University, 1984.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPeaty, David. Discovery for Students at Post-intermediate Level. 1a. ed. Oxford University, 1984.
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