S. . Sánchez Díaz, J. . Méndez Vergaray, E. G. . Rivera Arellano, M. J. . Ledesma Cuadros, and R. E. . Bravo Díaz, “Soft skills in academic procrastination in postgraduate students, COVID-19”, AVFT, vol. 41, no. 12, Apr. 2023.