Duangporn Angsumalee และ Wanna Charoenchang. (2009) Factors influencing customer rice seed buying decisions at Ratchaburi Rice Seed Center, Department of Rice, Ministry of Agriculture and Cooperatives. Thammasat University:ม.ป.ท.Duangporn Angsumalee และ Wanna Charoenchang. 2009. Factors influencing customer rice seed buying decisions at Ratchaburi Rice Seed Center, Department of Rice, Ministry of Agriculture and Cooperatives. ม.ป.ท.:Thammasat University;Duangporn Angsumalee และ Wanna Charoenchang. Factors influencing customer rice seed buying decisions at Ratchaburi Rice Seed Center, Department of Rice, Ministry of Agriculture and Cooperatives. ม.ป.ท.:Thammasat University, 2009. Print.