phalasri, A., and R. . Siriwallop. “Effects of the Information-Motivation-Behavioral Skills Training Program on knowledge and unwanted pregnancy preventive behaviors among university students in Chaiyaphum province”. Thai Journal of Nursing, vol. 71, no. 4, Nov. 2022, pp. 47-54, https://he02.tci-thaijo.org/index.php/TJN/article/view/257146.