Lua APA (7ú heag.)

VENUGOPAL, K. (2010). TEXTBOOK OF ENGINEERING GRAPHICS (1ST ED.). NEW AGE INTERNATIONAL.

Lua i Stíl Chicago (17ú heag.)

VENUGOPAL, K. TEXTBOOK OF ENGINEERING GRAPHICS. 1ST ED. NEW DELHI: NEW AGE INTERNATIONAL, 2010.

Lua MLA (9ú heag.)

VENUGOPAL, K. TEXTBOOK OF ENGINEERING GRAPHICS. 1ST ED. NEW AGE INTERNATIONAL, 2010.

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