กีรติวิบูลย์ ว. Factors Influencing on Learning Achievement of Calculus 1 for Thaksin University’s Students. parichartj [internet]. 2015 Nov. 30 [cited 2026 Sep. 12];28(1):98-117. available from: https://so05.tci-thaijo.org/index.php/parichartjournal/article/view/43171