- Información http://www.slideshare.net/damian1959/los-demostrativos-11151841 ,
- http://www.deperu.com/abc/gramatica/547/tilde-en-los-demostrativos-este-ese-aquel-etc
- Video explicativo http://www.videoele.com/A1_Los_demostrativos.html Ejercicios
4. http://www.123teachme.com/learn_spanish/demonstrative_pronouns_exercise_2