(1969). Research relating to special groups of children. U.S. Department of Health, Education, and Welfare.
Chicago-Zitierstil (17. Ausg.)Research Relating to Special Groups of Children. Washington, D.C: U.S. Department of Health, Education, and Welfare, 1969.
MLA-Zitierstil (8. Ausg.)Research Relating to Special Groups of Children. U.S. Department of Health, Education, and Welfare, 1969.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.