Jensen, C. H. (1997). Drawing workbook for engineering drawing and design. New York: Glencoe/McGwaw-Hill.
Παραπομπή Chicago StyleJensen, Cecil Howard. Drawing Workbook for Engineering Drawing and Design. New York: Glencoe/McGwaw-Hill, 1997.
Παραπομπή MLAJensen, Cecil Howard. Drawing Workbook for Engineering Drawing and Design. New York: Glencoe/McGwaw-Hill, 1997.
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