Titiya Chittihunsa และ Parawee Kumanerutana; Varijyaporn Panksaseam; Eakaphun Bangyeekhun; Titirutt Pornprayuth. (1997) The Effect of Some Crude Plant Extracts Antimycotics Growth of the Hyphae of Ascosphaera apis, the Agent Causing Chalkbrood Disease in Apis millifera. <i>Thai Agricultural Research Journal</i>, <i>15</i>(3), 194-204.Titiya Chittihunsa และ Parawee Kumanerutana; Varijyaporn Panksaseam; Eakaphun Bangyeekhun; Titirutt Pornprayuth. "The Effect of Some Crude Plant Extracts Antimycotics Growth of the Hyphae of Ascosphaera apis, the Agent Causing Chalkbrood Disease in Apis millifera". Thai Agricultural Research Journal 15 (1997):194-204.Titiya Chittihunsa และ Parawee Kumanerutana; Varijyaporn Panksaseam; Eakaphun Bangyeekhun; Titirutt Pornprayuth. The Effect of Some Crude Plant Extracts Antimycotics Growth of the Hyphae of Ascosphaera apis, the Agent Causing Chalkbrood Disease in Apis millifera. Department of Agriculture:ม.ป.ท. 1997.