^Continental crust has been defined as That type of the Earth’s crust which underlies the continents and the continental shelves: it is equivalent to the sial.Neuendorf, Klaus K. E.; Mehl, James P.; Jackson, Julia A., ed. (2005). Glossary of Geology (edisi ke-5th). Alexandria, Virginia: American Geological Institute. hlm. 139. ISBN978-3-540-27951-8.
^Smith, Frederick Gordon (1963). Physical Geochemistry. Reading, Massachusetts: Addison-Wesley. hlm. 379. OCLC253612701.
Sumber
Bates, R.L., and Jackson, J.A., (1987) Glossary of geology American Geological Institute, Alexandria, Virginia.
Dilek, Y. and Newcomb, S. (eds.) (2003) Ophiolite Concept and the Evolution of Geological Thought Geological Society of America Special Paper 373, Boulder, Colorado.