Não informado. (1932). National Elementary Principal. National Association of Elementary School Principals.
Lua i Stíl Chicago (17ú heag.)Não informado. National Elementary Principal. Arlington, Va: National Association of Elementary School Principals, 1932.
Lua MLA (8ú heag.)Não informado. National Elementary Principal. National Association of Elementary School Principals, 1932.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.