James Warren. The Sulu Zone 1768-1898: The Dynamics of External Trade, Slavery, and Ethnicity in the Transformation of a Southeast Asian Maritime State. 2nd Edition. Singapore: NUS Press, 2007. 

Part I: Patterns of Trading, 1768-1898

1. Traditional Patterns of Trade of the Sulu Sultanate 

      The Sino-Sulu Trade

      Buginese Trade with the Sulu Sultanate

2. Balambangan and the Rise of the Sulu Sultanate: The Formative Years, 1772-1775

3. The External Trade of the Sulu Sultanate: Florescence, 1768-1848

The Country Trade

The Manila-Jolo Trade

4. The Internal Trade of the Sulu Zone

5. The External Trade of the Sulu Sultanate: Vicissitudes, 1856-1878

6. Trade and Transformation in the Sulu Zone, 1856-1898

Part II: Patterns of Raiding, 1768-1898

7. Slave Raiding in Southeast Asia, 1768-1830: The Iranun

8. Slave Raiding in Southeast Asia, 1830-1898: The Balangingi

9. Slave Marketing in the Sulu Zone, 1768-1878

Part III: Slavery

10. Slavery in the Sulu Sultanate

   11. The Captives