APA (7 वां संस्करण) प्रशस्ति पत्र
The Lincoln Electric Company. (1973). The procedure handbook of arc welding (12th ed.). Export Representatives.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
The Lincoln Electric Company. The Procedure Handbook of Arc Welding. 12th ed. Ohio: Export Representatives, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
The Lincoln Electric Company. The Procedure Handbook of Arc Welding. 12th ed. Export Representatives, 1973.
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