Não informado. (1991). Structural Engineering International. International Association for Bridge and Structural Engineering.
Chicago-Zitierstil (17. Ausg.)Não informado. Structural Engineering International. Zurich, Suíça: International Association for Bridge and Structural Engineering, 1991.
MLA-Zitierstil (8. Ausg.)Não informado. Structural Engineering International. International Association for Bridge and Structural Engineering, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.