APA (7th ed.) Zitazioa
Varghese, P. (2013). Engineering graphics. McGraw Hill Education (I) Pvt.Ltd.
Chicago Style (17th ed.) Zitazioa
Varghese, P.I. Engineering Graphics. New Delhi: McGraw Hill Education (I) Pvt.Ltd, 2013.
MLA (9th ed.) Zitazioa
Varghese, P.I. Engineering Graphics. McGraw Hill Education (I) Pvt.Ltd, 2013.
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