Não informado. (1951). Annual Report of the International Tin Research Council. International Tin Research Institute.
Chicago-Zitierstil (17. Ausg.)Não informado. Annual Report of the International Tin Research Council. Greenford, Inglaterra: International Tin Research Institute, 1951.
MLA-Zitierstil (8. Ausg.)Não informado. Annual Report of the International Tin Research Council. International Tin Research Institute, 1951.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.