Picard, J. H. “Roofies and Oumanne – Is Military English in South Africa Being Gyppoed?”. English Usage in Southern Africa 6, no. 1 (December 24, 2018): 35–37. Accessed October 27, 2025. https://www.unisapressjournals.co.za/index.php/EUSA/article/view/5502.