Não informado. (1993). Technical Education & Training Abstracts. Carfax Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Technical Education & Training Abstracts. Oxfordshire, Inglaterra: Carfax Publishing, 1993.
Lua MLA (8ú heag.)Não informado. Technical Education & Training Abstracts. Carfax Publishing, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.