D.Helsel Jay, & Jensen Cecil H. (2001). Engineering Drawing and Design, Workbook. American: McGraw -Hill.
Chicago Style aipamenaD.Helsel Jay, và Jensen Cecil H. Engineering Drawing and Design, Workbook. American: McGraw -Hill, 2001.
MLA aipamenaD.Helsel Jay, và Jensen Cecil H. Engineering Drawing and Design, Workbook. American: McGraw -Hill, 2001.
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