Ahmed, Z., M. Z. Awan, M. Z. Safdar, T. Hasnain, and M. Kamran. “A Nexus Between Working Capital Management and Profitability: A Case Study of Pharmaceutical Sector in Pakistan”. International Journal of Economics and Financial Issues, vol. 6, no. 3S, June 2016, pp. 153-60, https://econjournals.com/index.php/ijefi/article/view/2624.