Não informado. (1951). Annual Report of the International Tin Research Council. International Tin Research Institute.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Annual Report of the International Tin Research Council. Greenford, Inglaterra: International Tin Research Institute, 1951.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Annual Report of the International Tin Research Council. International Tin Research Institute, 1951.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.