Não informado. (1976). Educational Gerontology. Hemisphere Publishing Corporation.
Lua i Stíl Chicago (17ú heag.)Não informado. Educational Gerontology. Washington: Hemisphere Publishing Corporation, 1976.
Lua MLA (8ú heag.)Não informado. Educational Gerontology. Hemisphere Publishing Corporation, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.