Não informado. (1977). IABSE Structures. International Association for Bridge and Structural Engineering.
Cita Chicago Style (17a ed.)Não informado. IABSE Structures. Zurich, Suíça: International Association for Bridge and Structural Engineering, 1977.
Cita MLA (8a ed.)Não informado. IABSE Structures. International Association for Bridge and Structural Engineering, 1977.
Precaución: Estas citas no son 100% exactas.