MacLaughlin, D., & Estrada, H. Structural steel drafting & design (2nd ed.).
Cita Chicago (17th ed.)MacLaughlin, David, i Hector Estrada. Structural Steel Drafting & Design. 2nd ed.
Cita MLA (8th ed.)MacLaughlin, David, i Hector Estrada. Structural Steel Drafting & Design. 2nd ed.
Atenció: Aquestes cites poden no estar 100% correctes.