Miftahul Khair, and Silvia Deswinta Maharani Damanik. “Comparative Evaluation of Hydrochloric and Acetic Acid Pretreatments for Chicken-Skin Gelatin and Its Application in Edible Films”. EduMatSains : Jurnal Pendidikan, Matematika Dan Sains, vol. 11, no. 2, Oct. 2026, pp. 216-30, doi:10.33541/edumatsains.v11i2.8780.