Nur’aeni, N., T. Suwartono, D. S. Septiningsih, and F. R. N. Wahidah. “The parenting plan, optimism, and subjective well-being among mothers of children with intellectual disability”. Kasetsart Journal of Social Sciences, vol. 45, no. 2, Apr. 2024, pp. 597–604, https://so04.tci-thaijo.org/index.php/kjss/article/view/272028.