“The Effect of Sugar Concentration on the Physicochemical and Organoleptic Characteristics of Tongka Langit Banana Marmalade”. Jurnal Teknologi Pangan Dan Industri Perkebunan (LIPIDA), vol. 5, no. 2, Oct. 2025, pp. 102-8, https://doi.org/10.58466/lipida.v5i2.1903.