APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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