“TRAINING ON MAKING HAND SANITIZER BASED ON BAY LEAF EXTRACT (Syzygium Polyanthum)”. JURNAL PENGMAS KESTRA (JPK) 2, no. 1 (June 30, 2022): 98–102. Accessed December 16, 2025. https://ejournal.medistra.ac.id/index.php/JPK/article/view/1183.