@book{4641,
	author = {Cronjé, M. and Pretorius, S. E.},
	title = {Vakdidaktiek van wiskunde in die junior primêre fase /},
	publisher = {De Jager-HAUM,},
	year = {c1987.},
	address = {Pretoria :},
	edition = {1ste uitg.}
}