Yenita br Sembiring; Berliana br Ginting; Susi Sandriani; Tabita Claudia Marcella Sianipar; Stevany Immanuella br Sinurat; Ira Maria Fran Lumbanbatu. Designing Reading Material Based On Graha Bunda Maria Annai Velangkanni. IJIS 2024, 3, 1-16.