Alvi, Sajid Mehmood, et al. “INTERNALIZING PSYCHOLOGICAL PROBLEMS AS PREDICTOR OF MENTAL WELLBEING AND LIFE SATISFACTION AMONG PREGNANT WOMEN”. Pakistan Journal of Physiology, vol. 14, no. 3, Aug. 2018, pp. 28-32, https://pjp.pps.org.pk/index.php/PJP/article/view/905.