Columbia subject headings:
Young adult fiction, American--History and criticism.
Zindel, Paul--Criticism and interpretation.
Harvard subject headings:
Young adult fiction, American--History and criticism
Youth--Books and reading--United States--History--20th century
Zindel, Paul--Criticism and interpretation.
Princeton subject headings:
Young adult fiction, American--History and criticism.
Zindel, Paul--Criticism and interpretation.