Gaya APA

Touwen, D, L. (2000). Shipping and Trade in The Java Sea Region . Semarang: Badan Penerbit Universitas Diponegoro.

Gaya MLA

Touwen, Dr., L.J.. "Shipping and Trade in The Java Sea Region". Semarang: Badan Penerbit Universitas Diponegoro, 2000. Text.