Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C., red. (2003). "Calcite"(PDF). Handbook of Mineralogy. Vol.V (Borates, Carbonates, Sulfates). Chantilly, VA, US: Mineralogical Society of America. ISBN978-0962209741. Arkiveret fra originalen(PDF) 5. april 2012. Hentet 23. januar 2021.
Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C., red. (2003). "Calcite"(PDF). Handbook of Mineralogy. Vol.V (Borates, Carbonates, Sulfates). Chantilly, VA, US: Mineralogical Society of America. ISBN978-0962209741. Arkiveret fra originalen(PDF) 5. april 2012. Hentet 23. januar 2021.