Não informado. (1963). Training directors journal. American Society of Training Directors.
Lua i Stíl Chicago (17ú heag.)Não informado. Training Directors Journal. Alexandria, Va: American Society of Training Directors, 1963.
Lua MLA (8ú heag.)Não informado. Training Directors Journal. American Society of Training Directors, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.