Somdech Rungsrisawat,  An Evaluation of Buying Behaviors and Perceptions of Organic Vegetable Consumers in Chiang Mai Province.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2014, vol. 93(9). 3098 - 3102
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/9999680.