Kugler, H K; Keller, C (1985). 'At, Astatine', system no. 8a. Gmelin handbook of inorganic and organometallic chemistry. Vol. 8 (8th ed.). Springer-Verlag. ISBN3-540-93516-9. {{cite book}}: Invalid |ref=harv (help)
Lavrukhina, A K; Pozdnyakov, A A (1966). Аналитическая химия технеция, прометия, астатина и франция (in Russian). Nauka. {{cite book}}: Invalid |ref=harv (help); Unknown parameter |trans_title= ignored (|trans-title= suggested) (help)CS1 maint: unrecognized language (link)