Dyfyniad APA
Jensen, C. H., & Helsel, J. D. (1997). Engineering drawing and design (5th ed.). Glencoe.
Dyfyniad Arddull Chicago
Jensen, Cecil Howard, and Jay D. Helsel. Engineering Drawing and Design. 5th ed. New York: Glencoe, 1997.
Dyfyniad MLA
Jensen, Cecil Howard, and Jay D. Helsel. Engineering Drawing and Design. 5th ed. Glencoe, 1997.
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