1. NACE International, International Corrosion Cost and Preventive Strategies in the United States, New York, 2002.
2. Jackson J.E., Cost of Corrosion Annually in the US Over $1 Trillion, 2013. 〈http://www.g2mtlabs.com/cost-of-corrosion〉. [14 July 2019].
3. Corrosion Engineering: Principles and Practices;Roberge,2008
4. The World Bank Group, Indonesia, 2019. 〈https://data.worldbank.org/country/indonesia〉. [20 July 2019].
5. Nag O.S., Countries with the Longest Coastline, 2018. 〈https://www.worldatlas.com/articles/countries-with-the-most-coastline.html〉. [20 July 2019].