Chacón-Moscoso, S., M. T. Anguera, S. Sanduvete-Chaves, and M. Sánchez-Martín. “Methodological Convergence of Program Evaluation Designs”. Psicothema, vol. 26, no. Número 1, Dec. 2014, pp. 91-96, https://reunido.uniovi.es/index.php/PST/article/view/10222.