Watsapon Tharana และ Athikom Bangviwat. (2014) Effect of Energy Efficiency Policy on Avoided Investment Cost for Electricity Utilities. King Mongkut’s University of Technology Thonburi:ม.ป.ท.Watsapon Tharana และ Athikom Bangviwat. 2014. Effect of Energy Efficiency Policy on Avoided Investment Cost for Electricity Utilities. ม.ป.ท.:King Mongkut’s University of Technology Thonburi;Watsapon Tharana และ Athikom Bangviwat. Effect of Energy Efficiency Policy on Avoided Investment Cost for Electricity Utilities. ม.ป.ท.:King Mongkut’s University of Technology Thonburi, 2014. Print.