1. Hoover HC, Hoover LH (1912) De Re Metallica by Georgius Agricola (translated from the first Latin edition of 1556). Mining Magazine, London (Agricola G (MDLVI) De Re Metallica. Froben, Basel. English edition)
2. Hoover HC, Hoover LH (1950) De re metallica by Georgius Agricola. Dover, New York
3. Marshall JL, Marshall VR (2005) Agricola. Hexag Alpha Chi Sigma 96(3):58–61
4. Marshall JL, Marshall VR (2008) Jachymov (Joachimsthal), Czech Republic. Hexag Alpha Chi Sigma 99(4):68–71, 75
5. Marshall JL (2002) Discovery of the elements, 2nd edn. Pearson Custom Publ., Boston