Não informado. World calendar of forthcoming meetings. Iron and Steel Institute.
Chicago-Zitierstil (17. Ausg.)Não informado. World Calendar of Forthcoming Meetings. London: Iron and Steel Institute.
MLA-Zitierstil (8. Ausg.)Não informado. World Calendar of Forthcoming Meetings. Iron and Steel Institute.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.