Visser, M, N M Pisa, E PJ Kleynhans, and R Wait. “Identifying the Comparative Advantage of Products and Industries of South Africa’s Mpumalanga Province”. Southern African Business Review 19, no. 2 (2015): 27–50. Accessed May 18, 2024. https://unisapressjournals.co.za/index.php/SABR/article/view/5904.