Não informado. (1978). The Journal for Vocational Special Needs Education. National Association of Vocational Education Special Needs Personnel.
Lua i Stíl Chicago (17ú heag.)Não informado. The Journal for Vocational Special Needs Education. Denton, Tex: National Association of Vocational Education Special Needs Personnel, 1978.
Lua MLA (8ú heag.)Não informado. The Journal for Vocational Special Needs Education. National Association of Vocational Education Special Needs Personnel, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.