PURI S P. (2013). GENERAL THEORY OF RELATIVITY (1ST ED.). PEARSON EDUCATION.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPURI S P. GENERAL THEORY OF RELATIVITY. 1ST ED. INDIA: PEARSON EDUCATION, 2013.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPURI S P. GENERAL THEORY OF RELATIVITY. 1ST ED. PEARSON EDUCATION, 2013.
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