Não informado. (1972). School psychology digest. National Association of School Psychologists.
Chicago-Zitierstil (17. Ausg.)Não informado. School Psychology Digest. Cuyahoga Falls, Ohio: National Association of School Psychologists, 1972.
MLA-Zitierstil (8. Ausg.)Não informado. School Psychology Digest. National Association of School Psychologists, 1972.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.