Rujukan Skala_masa_geologi

  1. ↑ Cohen, K.M.; Finney, S.; Gibbard, P.L. (2013), International Chronostratigraphic Chart (PDF), International Commission on Stratigraphy Parameter |author-separator= yang tidak diketahui diendahkan (bantuan).
  2. ↑ International Commission on Stratigraphy. "Chronostratigraphic Units." International Stratigraphic Guide. Accessed 14 December 2009. stratigraphy.org
  3. ↑ Statutes of the International Commission on Stratigraphy, retrieved 26 November 2009
  4. ↑ Correlating Earth's History, Paul R. Janke
  5. ↑ Rudwick, M. J. S. (1985). The Meaning of Fossils: Episodes in the History of Palaeontology. University of Chicago Press. m/s. 24. ISBN 0-226-73103-0.
  6. ↑ Fischer, Alfred G.; Garrison, Robert E. (2009). "The role of the Mediterranean region in the development of sedimentary geology: A historical overview". Sedimentology. 56: 3. Bibcode:2009Sedim..56....3F. doi:10.1111/j.1365-3091.2008.01009.x.
  7. ↑ Quoted in The contribution of Ibn Sina (Avicenna) to the development of the Earth Sciences, among other sources
  8. ↑ Sivin, Nathan (1995). Science in Ancient China: Researches and Reflections. Brookfield, Vermont: Ashgate Publishing Variorum series. III, 23–24.
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