Não informado. (1948). Metal Treatment and Drop Forging. Fuel and Metallurgical Journals.
Chicago-referens (17:e uppl.)Não informado. Metal Treatment and Drop Forging. London: Fuel and Metallurgical Journals, 1948.
MLA-referens (8:e uppl.)Não informado. Metal Treatment and Drop Forging. Fuel and Metallurgical Journals, 1948.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.