@book{21310,
	author = {Redelinghuys, R. B. and Hitchcock, I. Irene,},
	title = {Algemene wetenskap vir vandag :},
	publisher = {Juta,},
	year = {1980.},
	address = {Kenwyn :},
	edition = {1ste uitg.},
	note = {11de dr. 1992.}
}