Rosa Urrutia, Verónica Idalia, Jessica Lissette Interiano Segura, Luis David León Alejo, and Claudia Beatriz Pérez Hernández. “C# Windows Forms With Applications. The Automation of the Billing Process for Librería ABC”. Entorno, no. 65 (June 29, 2018): 61–68. Accessed May 19, 2024. https://www.camjol.info/index.php/entorno/article/view/6055.