https://ioc.xtec.cat/materials/FP/Recursos/fp_cai_c03_/web/fp_cai_c03_htmlindex/WebContent/u1/a1/continguts.html
- Professorat editor: Mª Carmen Villa PROF
https://ioc.xtec.cat/materials/FP/Recursos/fp_cai_c03_/web/fp_cai_c03_htmlindex/WebContent/u1/a1/continguts.html