@article{Parra Moreno_2009, title={PresentaciĆ³n}, volume={12}, url={https://educacionyeducadores.unisabana.edu.co/index.php/eye/article/view/1482}, number={2}, journal={EducaciĆ³n y Educadores}, author={Parra Moreno, Ciro Hernando}, year={2009}, month={oct.} }