مصادر المهمة الثانية عشر:
https://revware.net/products/revworks/?gclid=CjwKCAjwyOreBRAYEiwAR2mSkqimyDUW0gfPqQPTmZB0pBWoG7fChPVon70oOW_LK9SxnBapBGytiRoCwXMQAvD_BwE
https://uk.ask.com/web?qo=semQuery&ad=semA&q=cad%20programme&o=761380&ag=fw2&an=google_s&rch=uk27
http://info.searchall.com/sarmg4.b/search/web?q=cad+designer+software