hanifah, windia, A. S. Rezki, and L. R. . Alvita. “Portable Batch Type Biogas Reactor from Cow Manure Waste”. JoASCE (Journal Applied of Science and Chemical Engineering), vol. 2, no. 2, Feb. 2025, pp. 14-19, https://jurnal.polinela.ac.id/joasce/article/view/3844.