FLETCHIER WILLIAM I. (1980). ENGINEERING APPROACH TO DIGITAL DESIGN (7 TH ED.). PRENTICE HALL OF INDIA.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFLETCHIER WILLIAM I. ENGINEERING APPROACH TO DIGITAL DESIGN. 7 TH ED. NEW DELHI: PRENTICE HALL OF INDIA, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFLETCHIER WILLIAM I. ENGINEERING APPROACH TO DIGITAL DESIGN. 7 TH ED. PRENTICE HALL OF INDIA, 1980.
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