Giachino, J. W., & Beukema, H. J. (1978). Engineering technical drafting (4th ed.). American Tech.
Cita Chicago (17th ed.)Giachino, Joseph William, i Henry John Beukema. Engineering Technical Drafting. 4th ed. Chicago: American Tech, 1978.
Cita MLA (9th ed.)Giachino, Joseph William, i Henry John Beukema. Engineering Technical Drafting. 4th ed. American Tech, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.