H. Hasma, M. Ali, M. Sriasih, N. Husaefa, E. Sanjaya, and M. A. Zakaria, “Antimicrobial Antimicrobial Properties of Pineapple Peel Extract in Beef Skin Gelatin-Based Meatball Products ”, JLL, vol. 7, no. 4, pp. 312-325, Oct. 2026.