Gonzalez-Torres, P., P. . Cabrera-Solano, and L. . Castillo-Cuesta. “Exploring Perceptions of Online Feedback in Teaching EFL Speaking and Writing Skills During the COVID-19 Pandemic”. International Journal of Learning, Teaching and Educational Research, vol. 21, no. 7, July 2022, pp. 330-44, http://www.ijlter.myres.net/index.php/ijlter/article/view/1372.