Van Heerden, J.H. (Jan Horn), 1957-; Blignaut, James Nelson; Bohlmann, Heinrich R.; Cartwright, Anton; Diederichs, Nicci; Mander, Myles(University of Pretoria, Department of Economics, 2016)
Roos, Elizabeth Lousia; Horridge, J. Mark; Van Heerden, J.H. (Jan Horn), 1957-; Adams, Philip D.; Bohlmann, Heinrich R.; Kobe, Kgatedi Kenneth; Vumbukani-Lepolesa, Bokang(Wiley, 2020-03)