APA (7 वां संस्करण) प्रशस्ति पत्र
Bhatt, N. D., & Panchal, V. (2005). Elementary engineering drawing: Plane and solid geometry (48th ed.). Charotar Publishing House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Bhatt, N. D., और V.M Panchal. Elementary Engineering Drawing: Plane and Solid Geometry. 48th ed. Anand: Charotar Publishing House, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Bhatt, N. D., और V.M Panchal. Elementary Engineering Drawing: Plane and Solid Geometry. 48th ed. Charotar Publishing House, 2005.
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