Ponce, Omar A., y Nellie Pagan-Maldonado. «Educational Research in the 21st Century: Challenges and Opportunities for Scientific Effectiveness». IJERI: International Journal of Educational Research and Innovation, n.º 8, junio de 2017, pp. 24-37, https://www.upo.es/revistas/index.php/IJERI/article/view/2449.