Sari, L.M. et al. 2024. Effectiveness of Using A Combination of Rice Husk Ash and Monosodium Glutamate (MSG) on Growth of Lettude Plant (Lactuca sativa L.). Jurnal Biologi Tropis. 24, 3 (Sep. 2024), 892–899. DOI:https://doi.org/10.29303/jbt.v24i3.7514.