MAKNUN, C. L. Aplikasi Spherical Trigonometry dalam Menentukan Arah Kiblat Umat Islam. Jurnal Fourier, [S. l.], v. 10, n. 2, 2021. Disponível em: https://fourier.or.id/index.php/FOURIER/article/view/134. Acesso em: 3 jul. 2022.