Não informado. (1972). Machinery and steel. Association of Austrian Machinery and Steel Construction Industries.
Chicago-referens (17:e uppl.)Não informado. Machinery and Steel. Vienna: Association of Austrian Machinery and Steel Construction Industries, 1972.
MLA-referens (8:e uppl.)Não informado. Machinery and Steel. Association of Austrian Machinery and Steel Construction Industries, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.