@book{1974-Elkind-Kinderen,
  author		= "{Elkind}, D.",
  title			= "{Kinderen en Adolescenten}",
  edition		= "2nd",
  publisher		= "Ambo",
  address		= "Baarn, The Netherlands, EU",
  year			= "1974",
  isbn			= "ISBN 9026302762"
}