Rosslyn-Smith, Wesley John; De Abreu, Nicole Varela Aguiar; Pretorius, Marius(NISC Pty (Ltd) and Informa Limited (trading as Taylor & Francis Group), 2020)
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)