1. Clark M. J. R., Lynto, H., Crystal Structures of Potassium, Ammonium, Rubidium, and Cesium Tetrafluoborates, Can. J. Chem, 47, 2579-2586, 1969.
2. Smith R. A., Mcbroom R. B., 4th edition, Kirk Othmer Encyclopedia of Chemical Technology, Chap.4: Boron Compounds, John Wiley & Sons, Inc., New York, 1992.
3. Dale, L. P., 2.nd edition, Handbook of Inorganic Compounds, CRC Press, New York, 2011.
4. Thomas J. S., James A.G., Manufacture of Ammonium Fluoroborate, U.S. Pat. 2,799,556 (July. 16, 1957),
5. Booth H. S., Rhemar S., Inorganic Synthesis, Chap.2, McGraw-Hill Book Co., New York, 1946.