ใจมา ว. and ไชยานนท์ ป. 2018. Participation Management Model Based on the Sufficiency Economy Philosophy of the Agriculturist Group Planting the Chrysanthemum Flowers of the Sa-Ngo Royal Project Development Center in Chiang Rai Province. Journal of Management Science Chiangrai Rajabhat University. 12, 1 (Apr. 2018), 91–116.