Asain, C. A. (2013). Cultural and historical sites and landmarks in Sulu and Tawi-tawi. Journal of History.
Chicago-viite (17. p.)Asain, Calbi A. "Cultural and Historical Sites and Landmarks in Sulu and Tawi-tawi." Journal of History 2013.
MLA-viite (9. p.)Asain, Calbi A. "Cultural and Historical Sites and Landmarks in Sulu and Tawi-tawi." Journal of History, 2013.
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