FRANCISCO, Juan. THE CONTACT HISTORY OF MINDANAO AND SULU. Mindanao Journal, [S. l.], v. 14, n. 1-4, p. 11–23, 2025. Disponível em: https://msu-mindanaojournal.com/index.php/ojs/article/view/300.. Acesso em: 4 mar. 2026.