Educational Testing Service. The official guide to the GRE revised general test (2a ed.).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEducational Testing Service. The Official Guide to the GRE Revised General Test. 2a ed.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEducational Testing Service. The Official Guide to the GRE Revised General Test. 2a ed.
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