APA (7 वां संस्करण) प्रशस्ति पत्र

RADHAKRISHNAN, V. M. (2006). WELDING TECHNOLOGY AND DESIGN. NEW AGE (I) LTD.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

RADHAKRISHNAN, V M. WELDING TECHNOLOGY AND DESIGN. NEW DELHI: NEW AGE (I) LTD, 2006.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

RADHAKRISHNAN, V M. WELDING TECHNOLOGY AND DESIGN. NEW AGE (I) LTD, 2006.