Swanepoel, C. F.Lenake, J. M. (Johannes Malefetsane)University of South Africa. Department of African Languages(Pretoria : University of South Africa, 1986)
Swanepoel, C. F.Lenake, J. M. (Johannes Malefetsane)University of South Africa. Department of African Languages(Pretoria : University of South Africa, 1997)