Sunsern, R., and W. Lawang. “Bronfenbrenner’s Ecological Model: Theoretical Lens for a Community-Based Research”. Journal of Health Science and Alternative Medicine, vol. 1, no. 1, Apr. 2019, pp. 4-7, https://he01.tci-thaijo.org/index.php/jhealthscialternmed/article/view/185644.