Kiangsak Nukpook และ Chuancheun Diawwilia. (2011) Research and Development on Green Tea (Camellia sinensis L. Kuntz.) Steamer at Farmer Level. <i>Thai Agricultural Research Journal</i>, <i>29</i>(2), 170-181.Kiangsak Nukpook และ Chuancheun Diawwilia. "Research and Development on Green Tea (Camellia sinensis L. Kuntz.) Steamer at Farmer Level". Thai Agricultural Research Journal 29 (2011):170-181.Kiangsak Nukpook และ Chuancheun Diawwilia. Research and Development on Green Tea (Camellia sinensis L. Kuntz.) Steamer at Farmer Level. Department of Agriculture:ม.ป.ท. 2011.