บำเพ็ญ น., and ภูติอริยวัฒน์ จ. “The Efficiency of Coaching Model for Operation Executives in Retail Industries”. Rajapark Journal, vol. 11, no. 21, Feb. 2017, pp. 81-88, https://so05.tci-thaijo.org/index.php/RJPJ/article/view/171670.