Atawongsa, Sutheera, Nongnout Kanthachai, Surin Phithaksikul, Sirasit Siriwiwattanakul, and Jirapat Upatham. 2021. “The Factors Affecting Operational Efficiency of Franchise Entrepreneurs in Chiang Rai Province”. Journal of Management Science Chiangrai Rajabhat University 16 (1):149-73. https://so03.tci-thaijo.org/index.php/jmscrru/article/view/246472.