EDUCATIONAL TESTING SERVICE. (2002). GRADUATE RECORD EXAMINATIONS (GRE). EDUCATIONAL TESTING SERVICE.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEDUCATIONAL TESTING SERVICE. GRADUATE RECORD EXAMINATIONS (GRE). NEW JERSEY: EDUCATIONAL TESTING SERVICE, 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEDUCATIONAL TESTING SERVICE. GRADUATE RECORD EXAMINATIONS (GRE). EDUCATIONAL TESTING SERVICE, 2002.
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