Steel Construction Institute. (1987). Steel Construction Today. Blackwell Scientific Publications.
Citação do estilo Chicago (17ª ed.)Steel Construction Institute. Steel Construction Today. Oxford, Inglaterra: Blackwell Scientific Publications, 1987.
Citação MLA (8ª ed.)Steel Construction Institute. Steel Construction Today. Blackwell Scientific Publications, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.