aguilar, Francisco. "El título principal". OER Commons. Institute for the Study of Knowledge Management in Education, 13 Oct. 2015. Web. 29 Jun. 2024. <https://oercommons.org/authoring/10370-el-t%C3%ADtulo-principal>.
aguilar, F. (2015, October 13). El título principal. OER Commons. Retrieved June 29, 2024, from https://oercommons.org/authoring/10370-el-t%C3%ADtulo-principal.