Bibliography used in The Geosphere
- Continental crust. (2018, August 9). Wikipedia, The Free Encyclopedia. Consultation date: 12:45, August 17, 2018 from https://es.wikipedia.org/w/index.php?title=Corteza_continental&oldid=109852298.
- Oceanic crust. (2019, November 19). Wikipedia, The Free Encyclopedia. Consultation date: 19:21, February 22, 2020 from https://es.wikipedia.org/w/index.php?title=Corteza_oce%C3%A1nica&oldid=121439714 .
- Earth crust. (2020, March 1). Wikipedia, The Free Encyclopedia. Consultation date: 13:21, March 6, 2020 from https://es.wikipedia.org/w/index.php?title=Corteza_terrestre&oldid=123940568.
- Terrestrial mantle. (2018, August 16). Wikipedia, The Free Encyclopedia. Date of consultation: 06:25, August 18, 2018 from https://es.wikipedia.org/w/index.php?title=Manto_terrestre&oldid=109990671.
- Biosphere Project. (s. f.). Retrieved July 17, 2016, from http://recursostic.educacion.es/ciencias/biosfera/web/alumno/1ESO/Astro/contenidos.htm
- Biosphere Project. (s. f.). Retrieved July 28, 2016, from http://recursostic.educacion.es/ciencias/biosfera/web/alumno/1ESO/corteza/contenidos.htm