Worapongpat ์. - Developing the service efficiency of the company’s employees Chairman of Electricity Co., Ltd.: -. jhsmbuisc [internet]. 2022 Apr. 30 [cited 2026 Sep. 11];3(1):40-54. available from: https://so06.tci-thaijo.org/index.php/jhsmbuisc/article/view/255537