1. Hong Kong Marine Department, Marine Industrial Accident Statistics 2015, Report of Marine Deprtment, 2016.
2. UK Health and Safety Executive, Health and safety in Port and Docks, http://www.hse.gov.uk/ports, 26 July 2016.
3. Mabrori A, Port of Tanjung Priok Workers hold loading/unloading certificates (in Indonesian), Bisnis.com, http://industri.bisnis.com, 17 July 2016.
4. Armenia R, Unaccoplished Dwelling Time Target (in Indonesian), CNN Indonesia, http://www.cnnindonesia.com/ekonomi, 17 June 2016.
5. Clark A J, Risk Analysis for Engineering and economics, Lecture Presentation, Chapter 2, Department of Civil and Environmental Engineering, University of Maryland, http://www.assakkaf.com/courses/ence620/lectures/chapter2.pdf, 24 July 2016.