References
Miller, P. and Curtis, M. (2019). Britain rebuffed Nelson Mandela’s appeal for oil sanctions against Nigeria after it executed environmentalists from Daily Maverick, 31 December 2019, online. Available at https://www.dailymaverick.co.za/article/2019-12-31-revealed-britain-rebuffed-nelson-mandelas-appeal-for-oil-sanctions-against-nigeria-after-it-executed-environmentalists/ . Accessed on 6 January 2020