http://www.ub.edu/pa1/node/131
https://www.sebascelis.com/nuestra-vision-percepcion-de-la-realidad/
https://www.marxist.com/revoluvion-salvadorena-30-años-22-enero-198.htm.
https://www.conceptodedefinicion.de/realidad/
https://www.preparados.eu/la-realidad-inventada/
https://www.psicoportal.com/psicologia-basica/percepcion/
