Chantharattana, W. (2026) “The Development of Learning Achievement and Basic Research Skills by Using Instructional Package on Research for Development of Learning Innovation (Code 1043407-62) for 3rd year Student Teachers of Phetchaburi Rajabhat University”, Doctor of Philosophy in Social Sciences Journal, 5(2), pp. 149–166. available at: https://so08.tci-thaijo.org/index.php/dpssj/article/view/6588 (accessed: 4 October 2026).