@article{Ayerdis_2017, title={Presentación Num.9 Año 4}, url={https://www.camjol.info/index.php/HCS/article/view/7728}, DOI={10.5377/hcs.v0i9.7728}, number={9}, journal={Revista Humanismo y Cambio Social}, author={Ayerdis, Miguel}, year={2017}, month={may}, pages={5–7} }