@book{2960,
	author = {Wit, Jan de, and Veer, Guus van der,},
	title = {Psychologie van de adolescentie /},
	publisher = {Callenbach,},
	year = {1979.},
	series = {Intro boek},
	address = {Nijkerk :},
	edition = {4. herziene druk.},
	note = {Includes index.}
}