กีรติวิบูลย์ ว. A Study of The Correlation Among The Personal Factors Affecting on Learning Achievement of Calculus 1 for Thaksin University’s Students. parichartj [Internet]. 2015 Dec. 1 [cited 2024 May 18];28(2):88-107. Available from: https://so05.tci-thaijo.org/index.php/parichartjournal/article/view/43188