Khattak, M. S. ., M. Rafiq, N. ur R. . Khattak, and I. Ullah. “Consumers’ Willingness to Pay for Biodegradable Shopping Bags”. The Journal of Humanities & Social Sciences, vol. 32, no. 2, Dec. 2024, pp. 73-86, http://ojs.uop.edu.pk/jhss/article/view/1411.