“Eksplorasi Pengaruh Pewarna Alami Kulit Buah Naga Merah terhadap Kualitas Kerupuk Ikan Lemuru (Sardinella sp.): Exploration of the Effect of Natural Colouring from Red Dragon Fruit Peel on the Quality of Lemuru Fish Crackers (Sardinella sp.)” (2025) Journal of Food Engineering, 4(3), pp. 116–126. doi:10.25047/jofe.v4i3.6059.