Rodiah, Siti, Riana Aprilia, and Nina Ariesta. “Utilization Waste Materials to Synthesize Nano Al2O3-CaO Photocatalyst Using Infused Red Guava Leaves (Psidium Guajava L.)”. Al-Kimia 10, no. 2 (December 26, 2022). Accessed January 26, 2025. https://journal.uin-alauddin.ac.id/index.php/al-kimia/article/view/33481.