@book{18204,
	author = {Van der Walt, J. L. and Postma, W.},
	title = {Strominge in die opvoedingsteorie 2 /},
	publisher = {Butterworths,},
	year = {c1987.},
	address = {Durban :},
	note = {Includes:  Indeks p 245-258}
}