Arrivillaga-Cortés, Alfonso. “Guillermo Alfredo Vásquez González, Willy, Friendship above All”. Ciencias Sociales y Humanidades 4, no. 1 (November 30, 2017): 199–200. Accessed October 26, 2026. https://revistas.usac.edu.gt/index.php/csh/article/view/470.