Pisit Chaiwiboonpol และ Kaokanya Sudaprasert. (2011) Improving Cooking Stove’s Efficiency for Highland School. King Mongkut’s University of Technology Thonburi:ม.ป.ท.Pisit Chaiwiboonpol และ Kaokanya Sudaprasert. 2011. Improving Cooking Stove’s Efficiency for Highland School. ม.ป.ท.:King Mongkut’s University of Technology Thonburi;Pisit Chaiwiboonpol และ Kaokanya Sudaprasert. Improving Cooking Stove’s Efficiency for Highland School. ม.ป.ท.:King Mongkut’s University of Technology Thonburi, 2011. Print.