Hendri Faisal, Suprianto, Nur Aisyah Pitri, Sri Handayani, and Dwi Setio Purnomo , trans. “Analysis of Vitamin C Levels and Evaluation of Effervescent Tablets Mixture of Ethanol Extract of Red Guava Seeds and White Guava Seeds (Psidium Guajava L.)”. Jurnal Indah Sains dan Klinis 3, no. 1 (April 30, 2022): 1–7. Accessed November 21, 2024. https://ejournal.sumateraconnect.or.id/index.php/jisk/article/view/26.