Vivas Flores, Isaías David, and Andree Hector Salvador Herrera. “Study on Trends in Tools and Methodologies for Software Development in Guayaquil”. Ecuadorian Science Journal 5, no. 1 (March 31, 2021): 11-19. Accessed September 16, 2021. https://journals.gdeon.org/index.php/esj/article/view/92.