Da Costa, Melissa A.; Kruger, Esedra; Kritzinger, Alta M. (Aletta Margaretha); Graham, Marien Alet(African Online Scientific Information Systems, 2019-11)
Heid, Ulrich; Prinsloo, Danie J. (Daniel Jacobus), 1953-; Faab, Gertrud; Taljard, Elsabe (Elizabeth)(African Language Association of Southern Africa, 2009)