APA Citation

Helsel, J. D. (1979). Reading engineering drawings: :through connceptual sketching. New York:McGraw-Hill Book Company.

Chicago Style Citation

Helsel, Jay D. Reading Engineering Drawings: :through Connceptual Sketching. New York:McGraw-Hill Book Company, 1979.

MLA Citation

Helsel, Jay D. Reading Engineering Drawings: :through Connceptual Sketching. New York:McGraw-Hill Book Company, 1979.

Warning: These citations may not always be 100% accurate.