Não informado. (1951). School Libraries. American Association of School Librarians.
Chicago-Zitierstil (17. Ausg.)Não informado. School Libraries. Fulton, Mo: American Association of School Librarians, 1951.
MLA-Zitierstil (8. Ausg.)Não informado. School Libraries. American Association of School Librarians, 1951.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.