Lebepe, Jeffrey; Steyl, Johan Christian Abraham; Luus-Powell, Wilmien J.(NISC (Pty) Ltd and Informa UK Limited (trading as Taylor and Francis Group), 2020)
Phakoago, Makabudi V.; Maloney, Shane K.; Kamerman, Peter R.; Meyer, Leith Carl Rodney; Weyer, Nora M.; Fuller, Andrea(Oxford University Press, 2024-02)