References 1. Council for the Development of Cambodia (CDC). Investment Environment. Investment Trend. http://www.cambodiainvestment.gov.kh/investment-enviroment/investment-trend.html 2. Frank-Jürgen Richter. 1999.p.192. Books.google.ca.
1. ក្រុមប្រឹក្សាអភិវឌ្ឍន៍កម្ពុជា (CDC). បរិយាកាសវិនិយោគនៅកម្ពុជា. និន្នាការការអភិវឌ្ឍ. http://www.cambodiainvestment.gov.kh/investment-enviroment/investment-trend.html