7. Council for Development of Cambodia. “Cost of Doing Business: Utility Cost.” Accessed 30 January 2015. http://www.cambodiainvestment.gov.kh/investment-enviroment/cost-of-doing-business/utility-cost.html 8. Victor Jona. 2012. “Attaining Energy Access for All, Policy Law and Regulation” (paper presented on 4-5 June 2012).
6. ក្រុមប្រឹក្សាអភិវឌ្ឍន៍កម្ពុជា. “តម្លៃធ្វើជំនួញ៖ តម្លៃឧបករណ៍ប្រើប្រាស់.” ចូលអាន ៣០ មករា ២០១៥. http://www.cambodiainvestment.gov.kh/investment-enviroment/cost-of-doing-business/utility-cost.html ។