Giesecke, F. E., Mitchell, A., Spancer, H. C., Hill, I. L., Dygdon, J. T., & Novak, J. E. (2003). Technical drawing (12th ed.). Upper Saddle River, NJ: Prentice Hall.

Giesecke, Frederick Ernest, Alva Mitchell, Henry Cecil Spancer, Ivan Leroy Hill, John Thomas Dygdon, and James E. Novak. Technical Drawing. 12th ed. Upper Saddle River, NJ: Prentice Hall, 2003.

Giesecke, Frederick Ernest, et al. Technical Drawing. 12th ed. Upper Saddle River, NJ: Prentice Hall, 2003.