Hasan, Mustafa Saeed, and Manal Jabbar Sorour. “Green Value Chain Costs and Their Role in Achieving Sustainable Competitive Advantage”. Journal of Ecohumanism 3, no. 3 (July 26, 2024): 1778–1793. Accessed September 19, 2024. https://ecohumanism.co.uk/joe/ecohumanism/article/view/3549.