Não informado. (1991). Structural Engineering International. International Association for Bridge and Structural Engineering.
Citação do estilo Chicago (17ª ed.)Não informado. Structural Engineering International. Zurich, Suíça: International Association for Bridge and Structural Engineering, 1991.
Citação MLA (8ª ed.)Não informado. Structural Engineering International. International Association for Bridge and Structural Engineering, 1991.
警告：這些引文格式不一定是100％准確.