Não informado. (1968). Annual Progress in Child Psychiatry and Child Development. Brunner Mazel.
Chicago-Zitierstil (17. Ausg.)Não informado. Annual Progress in Child Psychiatry and Child Development. New York: Brunner Mazel, 1968.
MLA-Zitierstil (8. Ausg.)Não informado. Annual Progress in Child Psychiatry and Child Development. Brunner Mazel, 1968.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.