Bertoline, G. R. (2009). Graphics drawing workbook to accompany technical graphics communication and fundamentals ò graphics communication (2nd ed.). Boston: McGraw-Hill Higher Education.
Παραπομπή Chicago StyleBertoline, Gary R. Graphics Drawing Workbook to Accompany Technical Graphics Communication and Fundamentals ò Graphics Communication. 2nd ed. Boston: McGraw-Hill Higher Education, 2009.
Παραπομπή MLABertoline, Gary R. Graphics Drawing Workbook to Accompany Technical Graphics Communication and Fundamentals ò Graphics Communication. 2nd ed. Boston: McGraw-Hill Higher Education, 2009.
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