Nada, Ph.D., I. A. “A Didactic Proposal for the Use of the "Como Si" Structure in the Composite Sentences During the Learning of Spanish As a Foreign Language (ELE)”. ALUSTATH JOURNAL FOR HUMAN AND SOCIAL SCIENCES, no. 227(2), Dec. 2018, pp. 12-30, doi:10.36473/al-ustath.2018.0.227(2).12-30.