Sarun Therawong และ Pratoom Rerkklang. (2018) Causal relationship model of internal communication innovation in leading organizations of Thailand. National Institute of Development Administration:ม.ป.ท.Sarun Therawong และ Pratoom Rerkklang. 2018. Causal relationship model of internal communication innovation in leading organizations of Thailand. ม.ป.ท.:National Institute of Development Administration;Sarun Therawong และ Pratoom Rerkklang. Causal relationship model of internal communication innovation in leading organizations of Thailand. ม.ป.ท.:National Institute of Development Administration, 2018. Print.