Jeffreys, H. (1927). Operational methods in mathematical physics. University press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJeffreys, Harold. Operational Methods in Mathematical Physics. Cambridge [Eng.]: University press, 1927.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJeffreys, Harold. Operational Methods in Mathematical Physics. University press, 1927.
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