Coetzee, Marius J.; Blumberg, Lucille Hellen; Paweska, Janusz Tadeusz; Leman, Pat; Swanepoel, Robert; De Kock, Andre(Medpharm Publications, NISC (Pty) Ltd, Taylor and Francis, and Informa business, 2017)
Bills, Victoria L.; Salmon, Andrew H.; Harper, Steven J.; Overton, Tim G.; Neal, Chris R.; Jeffery, Bridget; Soothill, Peter W.; Bates, David Owen(Wiley-Blackwell, 2011-09)
De Lange, Stephanie Siobhan; Fuller, Andrea; Haw, Anna; Hofmeyr, Markus; Buss, Peter Erik; Miller, Michele; Meyer, Leith Carl Rodney(AOSIS Open Journals, 2017-02-24)