VENUGOPAL, K. (2010). TEXTBOOK OF ENGINEERING GRAPHICS (1ST ED.). NEW AGE INTERNATIONAL.
Citazione stile Chigago Style (17a edizione)VENUGOPAL, K. TEXTBOOK OF ENGINEERING GRAPHICS. 1ST ED. NEW DELHI: NEW AGE INTERNATIONAL, 2010.
Citatione MLA (9a ed.)VENUGOPAL, K. TEXTBOOK OF ENGINEERING GRAPHICS. 1ST ED. NEW AGE INTERNATIONAL, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.