@book{4120,
	author = {Mook, Bertha.},
	title = {Causal thought in schizophrenic children.},
	publisher = {Rand Afrikaans University,},
	year = {1972.},
	series = {Publication series of the Rand Afrikaans University, B3},
	address = {Johannesburg :},
	note = {Originally presented as the author's thesis, Ottawa, 1967.}
}