Cárdenas Loor, A. I., P. G. Velásquez, L. L. Napa Arévalo, and H. F. Alarcón López. “Social Skills and Behavioral Problems in 3- to 5-Year-Old Schoolchildren”. Espirales Revista Multidisciplinaria De investigación, vol. 5, no. 38, July 2021, pp. 33-44, doi:10.31876/er.v5i38.783.