Nattaporn Virunhagarun และ Wasita Boonsathorn. (2016) Factors leading to work passion for successors in SMEs family business. National Institute of Development Administration:ม.ป.ท.Nattaporn Virunhagarun และ Wasita Boonsathorn. 2016. Factors leading to work passion for successors in SMEs family business. ม.ป.ท.:National Institute of Development Administration;Nattaporn Virunhagarun และ Wasita Boonsathorn. Factors leading to work passion for successors in SMEs family business. ม.ป.ท.:National Institute of Development Administration, 2016. Print.