Laoburan, Thassanee. 2020. “THE DEVELOPMENT OF THE SOCIAL STUDIES TEACHERS CHARACTERISTICS INDICATORS IN 21ST CENTURY IN NAKHON RATCHASIMA PRIMARY EDUCATIONAL SERVICE AREA OFFICE 7”. Journal of MCU Nakhondhat 7 (10). Nakhon Si Thammarat, Thailand:314-26. https://so03.tci-thaijo.org/index.php/JMND/article/view/247537.