Não informado. World calendar of forthcoming meetings. Iron and Steel Institute.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. World Calendar of Forthcoming Meetings. London: Iron and Steel Institute.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. World Calendar of Forthcoming Meetings. Iron and Steel Institute.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.