Não informado. (1991). Structural Engineering International. International Association for Bridge and Structural Engineering.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Structural Engineering International. Zurich, Suíça: International Association for Bridge and Structural Engineering, 1991.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Structural Engineering International. International Association for Bridge and Structural Engineering, 1991.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.