R. Supratama, E. P. . Kholifah, A. N. . Millah, and W. . Helwiyah, “Scientific perspective on rukyatul hilal: A case study of assalam kartasura sukoharjo observatory”, Amorti: Jurnal Studi Islam Interdisipliner, vol. 3, no. 2, pp. 51–61, Apr. 2024.