du Preez, Mario, Greig Menzies, Michael Sale, and Stephen Hosking. “Measuring the Indirect Costs Associated With the Establishment of a Wind Farm: An Application of the Contingent Valuation Method”. Journal of Energy in Southern Africa 23, no. 1 (October 5, 2017): 2–7. Accessed May 3, 2024. https://energyjournal.africa/article/view/3151.