Gaya APA

Warren, J, F. (1981). The Sulu Zone 1768-1898: The dynamics of external trade, slavery, and ethnicity in the transformation of a Southeast Asian maritime state. . Singapore: Singapore Singapore University Press.

Gaya MLA

Warren, James, Francis. "The Sulu Zone 1768-1898: The dynamics of external trade, slavery, and ethnicity in the transformation of a Southeast Asian maritime state. ". Singapore: Singapore Singapore University Press, 1981. Buku.