M. . Haseeb and Q. M. A. . Hye, “The Nexus between the Exportation of Social Sustainability Certifications that Restrict Malaysian Palm Oil Companies and their Profitability: A Panel on Driscoll and Kraay Standard Errors and a Fully Modified Ordinary Least Square Approach”, 11, vol. 9, no. 2, pp. 120–134, Jul. 2020.