Ricardo Viveros, James, Jaime Andrés Orozco, and Ángela María Cruz. “The Health and Work Conditions of Informal Traders Marketplaces of Popayán, Colombia”. Revista Colombiana de Salud Ocupacional 2, no. 3 (September 1, 2012): 5–12. Accessed December 5, 2025. https://revistas.unilibre.edu.co/index.php/rc_salud_ocupa/article/view/4837.