., M.; Sri Yusmartini , E. .; Okka Widhanny , L. . Transesterification of Biodiesel from Kapok Seed Oil (ceiba Pentandra) Using a Natural Heterogeneous Katalyst (rice Husk Activation). IJAC 2024, 12 (2), 77-81. https://doi.org/10.14419/6fga1s04.