APA
U S Department of Health E. a. W., . (1949). Your child from 6 to 12. Children's Bureau, Washington: .
Chicago
U S Department of Health Education and Welfare, . 1949. Your child from 6 to 12. Children's Bureau, Washington: .
Harvard
U S Department of Health E. a. W., . (1949). Your child from 6 to 12. Children's Bureau, Washington: .
MLA
U S Department of Health Education and Welfare, . Your child from 6 to 12. Children's Bureau, Washington: . 1949.