Não informado. (1903). Foundry Trade Journal. Fuel and Metallurgical Journals.
Chicago-referens (17:e uppl.)Não informado. Foundry Trade Journal. Redhill, Inglaterra: Fuel and Metallurgical Journals, 1903.
MLA-referens (8:e uppl.)Não informado. Foundry Trade Journal. Fuel and Metallurgical Journals, 1903.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.