@book{41954,
	author = {Opperman, R.W.J. and De Klerk, W.J.},
	title = {Calvinistiese leierskap en groepsdinamika;  Calvinistiese leierskap ten opsigte van die Jeug},
	publisher = {n.d.},
	year = {n.d.},
	address = {n.d.}
}