Siahaan, T. N., B. Basuki, A. H. Siregar, and D. I. Muthawali. “Morphological Effect on Swelling Behaviour of Carboxymethyl Cellulose–Maleic Acid Hydrogel Modified With Kombucha Bacterial Cellulose ”. Jurnal Akademika Kimia, vol. 12, no. 2, May 2023, pp. 86-91, doi:10.22487/j24775185.2023.v12.i2.pp86-91.