Hadji Abdul Racman, Sohayle M. “The Islamicity of Lanao Sultanate, Philippines in the 17th Century As a State”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 42, no. 3 (November 23, 2018): 205–230. Accessed April 28, 2024. https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/9506.