Vongvipha Thosuwonchinda และ Suwaree Namwong. (2017) Food activity uniqueness for creative tourism development: a case study Chiang Mai, Thailand. National Institute of Development Administration:ม.ป.ท.Vongvipha Thosuwonchinda และ Suwaree Namwong. 2017. Food activity uniqueness for creative tourism development: a case study Chiang Mai, Thailand. ม.ป.ท.:National Institute of Development Administration;Vongvipha Thosuwonchinda และ Suwaree Namwong. Food activity uniqueness for creative tourism development: a case study Chiang Mai, Thailand. ม.ป.ท.:National Institute of Development Administration, 2017. Print.