Wichuwan Satsomboon และ Oranuch Pruetipibultham. (2016) A Multi-level study of the antecedent factors of innovation : case studies of Thai small and medium-size enterprises. National Institute of Development Administration:ม.ป.ท.Wichuwan Satsomboon และ Oranuch Pruetipibultham. 2016. A Multi-level study of the antecedent factors of innovation : case studies of Thai small and medium-size enterprises. ม.ป.ท.:National Institute of Development Administration;Wichuwan Satsomboon และ Oranuch Pruetipibultham. A Multi-level study of the antecedent factors of innovation : case studies of Thai small and medium-size enterprises. ม.ป.ท.:National Institute of Development Administration, 2016. Print.