Dubey,N H. (2012). Engineering Drawing. McGrawhill.
Dyfyniad Arddull ChicagoDubey,N H. Engineering Drawing. New Delhi: McGrawhill, 2012.
Dyfyniad MLADubey,N H. Engineering Drawing. McGrawhill, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.