Tongkhan, Jaruwan, and Maneeya Surat. 2023. “The Development of the Measurement Instruments of the Media Literacy Skills in the 21st Century for 6th Grade Students in Nongbualamphu Province: The Development of the Measurement Instruments of the Media Literacy Skills in the 21st Century for 6th Grade Students in Nongbualamphu Province”. RATANABUTH JOURNAL 5 (1). Yasothon, Thailand:142-55. https://so07.tci-thaijo.org/index.php/rtnb/article/view/2503.