Supratama, R., 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, Apr. 2024, pp. 51-61, doi:10.59944/amorti.v3i2.293.