Granados-Chinchilla, Fabio. “Teaching Food Analysis through Unknowns: Study Case for Methylxanthines, Organic Acids, and Sugars Examination over Liquid Chromatography”. International Journal of Physics and Chemistry Education 15, no. 2 (July 4, 2024): 33–44. Accessed September 19, 2024. https://ijpce.org/index.php/IJPCE/article/view/355.