Sittirach, Thanakrit. 2021. “THE DEVELOPMENT OF TEACHING AND LEARNING ADMINISTRATION THAT FOCUSSES ON LEARNER OF SECONDARY SCHOOLS IN PICHIT PROVINCE”. Journal of MCU Nakhondhat 8 (12). Nakhon Si Thammarat, Thailand:153-69. https://so03.tci-thaijo.org/index.php/JMND/article/view/257654.