Nuttaprachya Nantavisit และ Kassara Sukpatch. (2021) Causal factors affecting integrated policy implementation of tourism in Thailand. National Institute of Development Administration:ม.ป.ท.Nuttaprachya Nantavisit และ Kassara Sukpatch. 2021. Causal factors affecting integrated policy implementation of tourism in Thailand. ม.ป.ท.:National Institute of Development Administration;Nuttaprachya Nantavisit และ Kassara Sukpatch. Causal factors affecting integrated policy implementation of tourism in Thailand. ม.ป.ท.:National Institute of Development Administration, 2021. Print.