Manurung, Annisa Melissa, and Hardo Basuki. “An Analytical Assessment of Assurance Practices in Social Environmental and Sustainable Reporting in the United Kingdom and North America”. Gadjah Mada International Journal of Business 12, no. 1 (January 12, 2010): 75 - 115. Accessed August 17, 2024. https://jurnal.ugm.ac.id/v3/gamaijb/article/view/15107.