Gaya APA

Barnard, T, P. (2003). Multiple centres of authority : Society and environment in Siak and eastern Sumatra, 1674-1827 / Timothy P. Barnard . Leiden: KITLV Press.

Gaya MLA

Barnard, Timothy, P.. "Multiple centres of authority : Society and environment in Siak and eastern Sumatra, 1674-1827 / Timothy P. Barnard". Leiden: KITLV Press, 2003. Textbook.