WRIGHT, W. S. (2001). A first course in differential equations: The classic fifth edition. Brooks Cole.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWRIGHT, Warren S. A First Course in Differential Equations: The Classic Fifth Edition. Brooks Cole, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWRIGHT, Warren S. A First Course in Differential Equations: The Classic Fifth Edition. Brooks Cole, 2001.
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