Van der Linde, Jeannie; Swanepoel, De Wet; Glascoe, Frances Page; Louw, Elizabeth M.; Hugo, Johannes F.M.; Vinck, Bart M.(AOSIS OpenJournals, 2015-09-08)
Eccles, Renata; Van der Linde, Jeannie; Le Roux, Maria (Mia); Holloway, Jenny; MacCutcheon, Douglas; Ljung, Robert; Swanepoel, De Wet(American Speech-Language-Hearing Association, 2021-01)