Rahman, A., Z. Iqbal, H. Lovel, and M. A. Shah. “Screening for Postnatal Depression in the Developing World: A Comparison of the WHO Self-Reporting Questionnaire (SRQ-20) And the Edinburgh Postnatal Depression Screen (EPDS)”. Journal of Pakistan Psychiatric Society, Vol. 2, no. 02, Dec. 2005, pp. 69-72, https://jpps.pk/index.php/journal/article/view/796.