Barker, Rachel; Greeff, Wilhelmina Johanna(Proceedings of world conference on educational multimedia, hypermedia and telecommunications 2011, edited by T Bastiaens & M Ebner, Chesapeake, VA: AACE, 2011)
Greeff, Wilhelmina Johanna(Paper read at the annual British Association for International and Comparative Education, University of Cambridge, 8-10 September 2012, 2012)