Lua APA (7ú heag.)
Bhatt, N. D., & Panchal, V. (2005). Elementary engineering drawing: Plane and solid geometry (48th ed.). Charotar Publishing House.
Lua i Stíl Chicago (17ú heag.)
Bhatt, N. D., agus V.M Panchal. Elementary Engineering Drawing: Plane and Solid Geometry. 48th ed. Anand: Charotar Publishing House, 2005.
Lua MLA (9ú heag.)
Bhatt, N. D., agus V.M Panchal. Elementary Engineering Drawing: Plane and Solid Geometry. 48th ed. Charotar Publishing House, 2005.
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