Tsanwani, Avhasei Richard; Harding, Ansie; Engelbrecht, Johann; Maree, J.G. (Kobus)(Southern African Association for Research in Mathematics, Science and Technology Education, 2014)
Da Costa, Melissa A.; Kruger, Esedra; Kritzinger, Alta M. (Aletta Margaretha); Graham, Marien Alet(African Online Scientific Information Systems, 2019-11)