APA (7th ed.) Citation

Longfield, E. M. (1921). Sheet metal drafting. McGraw-Hill.

Chicago Style (17th ed.) Citation

Longfield, Ellsworth M. Sheet Metal Drafting. New York: McGraw-Hill, 1921.

MLA (9th ed.) Citation

Longfield, Ellsworth M. Sheet Metal Drafting. McGraw-Hill, 1921.