Rujukan Hablur

  1. ↑ κρύσταλλος, Henry George Liddell, Robert Scott, A Greek-English Lexicon, on Perseus Digital Library
  2. ↑ κρύος, Henry George Liddell, Robert Scott, A Greek-English Lexicon, on Perseus Digital Library
  3. ↑ "The American Heritage Dictionary of the English Language: Fourth Edition: Appendix I: Indo-European Roots". 2000.  |contribution= diabaikan (bantuan)
  4. ↑ The surface science of metal oxides, by Victor E. Henrich, P. A. Cox, page 28, google books link
  5. ↑ Rencana ini menggabungkan teks daripada Ensiklopedia Britannica Edisi Ke-11 article "Petrology", sebuah terbitan yang kini di domain awam.