French, T. E., & Vierck, C. (1960). A manual of engineering drawing for students & draftsmen (9th ed.). New York: McGraw-Hill.
Παραπομπή Chicago StyleFrench, Thomas Ewing, and Charles Vierck. A Manual of Engineering Drawing for Students & Draftsmen. 9th ed. New York: McGraw-Hill, 1960.
Παραπομπή MLAFrench, Thomas Ewing, and Charles Vierck. A Manual of Engineering Drawing for Students & Draftsmen. 9th ed. New York: McGraw-Hill, 1960.
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