Walaiporn Sasiprapa และ Narong Boonmeerowd. (1999) Preliminary Study to Classify Suitability Zones for Pummelo cv. Khao Taeng Gua. <i>Thai Agricultural Research Journal</i>, <i>17</i>(3), 310-320.Walaiporn Sasiprapa และ Narong Boonmeerowd. "Preliminary Study to Classify Suitability Zones for Pummelo cv. Khao Taeng Gua". Thai Agricultural Research Journal 17 (1999):310-320.Walaiporn Sasiprapa และ Narong Boonmeerowd. Preliminary Study to Classify Suitability Zones for Pummelo cv. Khao Taeng Gua. Department of Agriculture:ม.ป.ท. 1999.