Columbia subject headings:
Adolescent psychology--United States.
Sibling rivalry.
Stepchildren--United States.
Stepfamilies--United States.
Harvard subject headings:
Adolescent psychology--United States
Sibling rivalry.
Stepchildren--United States
Stepfamilies--United States
Princeton subject headings:
Adolescent psychology--United States.
Sibling rivalry.
Stepchildren--United States.
Stepfamilies--United States.