D.Helsel Jay, & Jensen Cecil H. (2001). Engineering Drawing and Design, Workbook. American: McGraw -Hill.
Chicago-стиль цитированияD.Helsel Jay, và Jensen Cecil H. Engineering Drawing and Design, Workbook. American: McGraw -Hill, 2001.
MLA-цитированиеD.Helsel Jay, và Jensen Cecil H. Engineering Drawing and Design, Workbook. American: McGraw -Hill, 2001.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.