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 [Internet]. 2024 Jan. 12 [cited 2026 Jul. 14];3(1):1-16. Available from: https://journal.formosapublisher.org/index.php/ijis/article/view/7529