Azis, R., A. Asrul, and R. Risman. “Mode Choice for Sea Transportation in Archipelagic Region: The Case of Kendari-Konawe Route in South East Sulawesi Province”. Journal of Regional and City Planning, vol. 27, no. 2, Aug. 2016, pp. 151-72, doi:10.5614/jrcp.2016.27.2.6.