WEBB JOHN W. (2011). PROGRAMMABLE LOGIC CONTROLLERS (5TH ED.). PHI LEARNING PRIVATE LIMITED.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWEBB JOHN W. PROGRAMMABLE LOGIC CONTROLLERS. 5TH ED. NEW DELHI: PHI LEARNING PRIVATE LIMITED, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWEBB JOHN W. PROGRAMMABLE LOGIC CONTROLLERS. 5TH ED. PHI LEARNING PRIVATE LIMITED, 2011.
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