Pichsinee Soonsap และ Suwaree Namwong. (2016) The new phenomenon of slow food tourism development : the evaluation of tourists's perspectives focuses on the process of adoption, diffusion and perceived value. National Institute of Development Administration:ม.ป.ท.Pichsinee Soonsap และ Suwaree Namwong. 2016. The new phenomenon of slow food tourism development : the evaluation of tourists's perspectives focuses on the process of adoption, diffusion and perceived value. ม.ป.ท.:National Institute of Development Administration;Pichsinee Soonsap และ Suwaree Namwong. The new phenomenon of slow food tourism development : the evaluation of tourists's perspectives focuses on the process of adoption, diffusion and perceived value. ม.ป.ท.:National Institute of Development Administration, 2016. Print.