Escalona-Pardo, Eduardo, Laritza Pantoja-Tamayo, e Yusimí Frías-Reyes. A System of Language Games for Improving the Speaking Skill in Tenth Graders at Micaela Riera Oquendo Senior High School in Manzanillo (Original). Roca. Revista científico - educacional de la provincia Granma 14, no. 2 (junho 27, 2018): 41-49. Acessado novembro 22, 2019. https://revistas.udg.co.cu/index.php/roca/article/view/224.