Committee for Study of Bauxite, Alumina & Aluminium. [2017-06-24]. (原始内容 (PDF)存档于2016-08-29). Real world examples Comprehensive directory of topics in plant
Christoph Schmitz. Handbook ofAluminium Recycling. Vulkan-Verlag GmbH. 2006: 18-24. Robert E. Krebs. The History and Use of Our Earth's Chemical Elements: