Rahman, Aulia and Putra, Ananda and Bahrizal, Bahrizal and Sanjaya, Hary and Dewata, Indang and Latisma Dj, Latisma Dj and Sundari, Rita and Nizar, Umar Kalmar (2019) Catalytic Activity of Reused SiO₂–TiO₂ on Biodiesel Production from Waste Cooking Oil in Various Catalyst Loading. International Journal of Research and Review, 6 (8). pp. 86-93. ISSN Print: 2454-2237 dan Online: 2349-9788