N. Castillo Eichin, “La música y tres artes poéticas de Nicolás Guillén / Music and three poetic arts of Nicolas Guillen”, EstuDAv, no. 24, pp. 66–75, Dec. 2015, Accessed: Aug. 14, 2026. [Online]. Available: http://journals.usach.cl/ojs/index.php/ideas/article/view/2273