Brunette, E.L.; Kotze, J.; Wood, Paola Silvia; Du Toit, Peet J.; Grant, C.C. (Catharina Cornelia)(Africa Association for Health, Physical Education, Recreation, Sport and Dance, 2012-03)
Tan, Hsern Ern Ivan; Santa Maria, Peter Luke; Wijesinghe, Philip; Francis Kennedy, Brendan; Allardyce, Benjamin James; Eikelboom, Robert H.; Atlas, Marcus David; Dilley, Rodney James(Sage, 2018)
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)