Singgih Tri Sulistiyono. 2003. The Java Sea Network: Patterns in the Development of Interregional Shipping and Trade in the Process of National Economic Integration in Indonesia, 1870s-1970s. Leiden: Universiteit Leiden.
Singgih Tri Sulistiyono. 2003. The Java Sea Network: Patterns in the Development of Interregional Shipping and Trade in the Process of National Economic Integration in Indonesia, 1870s-1970s. Leiden: Universiteit Leiden.