(1953). Truscon open OT truss steel joists. Truscon Steel Division.
Cita Chicago (17th ed.)Truscon Open OT Truss Steel Joists. Youngstown: Truscon Steel Division, 1953.
Cita MLA (9th ed.)Truscon Open OT Truss Steel Joists. Truscon Steel Division, 1953.
Atenció: Aquestes cites poden no estar 100% correctes.