The Sulu zone, 1768-1898 the dynamics of external trade, slavery and ethnicity in the transformation of a Southeast Asian maritime state - Warren, James Francis (Quezon City New Day Pub., 1985)
Based on the author's doctoral dissertation Australian National University, 1975.
Originally published by Singapore University Press, 1981.
Keywords: Sulu -- Commerce -- 1768-1898.; Sulu -- History -- 1768-1898.; Slaves -- Philippines -- Sulu