Gopal, M. (2002). Control systems: Principles and design (2nd ed.). Tata McGraw-Hill Pub.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGopal, M. Control Systems: Principles and Design. 2nd ed. New Delhi: Tata McGraw-Hill Pub, 2002.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGopal, M. Control Systems: Principles and Design. 2nd ed. Tata McGraw-Hill Pub, 2002.
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