Supit Vorachate และ Kanchana Rungsihirunrat. (2009) Satisfaction of betel nut chalk for aedes aegypti larva control project, Chaturaphak Phiman district, Roi Et province, Thailand. Chulalongkorn University:ม.ป.ท.Supit Vorachate และ Kanchana Rungsihirunrat. 2009. Satisfaction of betel nut chalk for aedes aegypti larva control project, Chaturaphak Phiman district, Roi Et province, Thailand. ม.ป.ท.:Chulalongkorn University;Supit Vorachate และ Kanchana Rungsihirunrat. Satisfaction of betel nut chalk for aedes aegypti larva control project, Chaturaphak Phiman district, Roi Et province, Thailand. ม.ป.ท.:Chulalongkorn University, 2009. Print.