Warren, J. F. (1985). The Sulu zone 1768-1898: The dynamics of external trade, slavery and ethnicity in the transformation of a Southeast Asian maritime state. New Day Pub.
Chicago Style (17th ed.) CitationWarren, James Francis. The Sulu Zone 1768-1898: The Dynamics of External Trade, Slavery and Ethnicity in the Transformation of a Southeast Asian Maritime State. Quezon City: New Day Pub, 1985.
MLA (9th ed.) CitationWarren, James Francis. The Sulu Zone 1768-1898: The Dynamics of External Trade, Slavery and Ethnicity in the Transformation of a Southeast Asian Maritime State. New Day Pub, 1985.
Warning: These citations may not always be 100% accurate.