______. Research and development learning, students have the ability to manage the business. Pet food tray to support tourism in Chiang Rai province. Chiang Rai rajabhat University: Rai, 2553 (2010).
. ______ Research and development of the students are capable of learning the business of farming traditions to support Chiang Rai. Chiang Rai Rajabhat University, Thailand, 2553.
_ _ _ _ _ _. Research and development management model for students to have the ability to learn business management . Pet tiger to support tourism province. Chiang Rai: University Chiang Rai, 2553. .