Mano A, Dechpichai W. Effects of Using Teaching Package on Academic Achievement and Satisfaction with Study on Automotive Transmission of Professional Certificate Students at Vocational Level One of Bangnara Technical College. IARJ [internet]. 2026 Mar. 14 [cited 2026 Sep. 11];6(2):e290584 . available from: https://so03.tci-thaijo.org/index.php/IARJ/article/view/290584