James D. Bethune. Engineering Graphics with AutoCAD? 2009 (1.). Pearson India.
Lua i Stíl Chicago (17ú heag.)James D. Bethune. Engineering Graphics with AutoCAD? 2009. 1. Pearson India.
Lua MLA (8ú heag.)James D. Bethune. Engineering Graphics with AutoCAD? 2009. 1. Pearson India.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.